Tamper-evident packaging

Abstract

A method of preparing tamper-evident packaging comprises the steps of applying a customisable tape 12 to a packaging container 10, the tape having a laser-imageable layer (340, Fig. 7) within or adjacent an adhesive layer (240, Fig. 7) and creating an image (13, Fig. 1a) in the laser-imageable layer by laser irradiation, wherein the image is at least partially transferred 16 onto the container after removal of the tape. Typically, the image comprises a computer-readable code and may be formed before or after application of the tape to the container. The tape may comprise a substrate (140, Fig. 7), a paper layer, and a release layer (440, Fig. 7) positioned between the substrate and the laser-imageable layer. The laser-imageable layer may be formed within or adjacent the paper layer. First and second images may be created in first and second regions of the tape, each region comprising an adhesive with different properties.

Description

FIELD OF THE INVENTION This application relates to a method of preparing tamper-evident packaging, a tamper-evident customisable packaging tape, and a method of tracking the delivery of a tamper-evident package. BACKGROUND The rapid growth of internet commerce, globalisation of supply chains, and the increase in the number of items which are partially manufactured in separate locations has driven a corresponding growth in the number of packages being delivered. With this change, there has been an increasing problem in the number of losses, thefts, and damage to packages while being delivered. This is especially problematic for expensive goods or goods which are in high demand, and therefore a target for theft. The delivery of pharmaceuticals is particularly affected, with thefts common for controlled drugs such as opioid painkillers and high-value antidepressants. There have been large increases in unexplained losses occurring in supply lines. One means that logistics and shipping companies have to deal with these issues is the use of tamper-evident packaging. Tamper-evident tape has existed for some time and consists of adhesive tape with markings that transfer onto an underlying packaging if the tape is removed after application, providing a visual indication that the packaging has been tampered with. However, existing tamperproof packaging still has several issues. Tamper-evident tape is usually generic and does not carry any additional information beyond the marking to be transferred to the package. It can be replaced with equivalent tape after removal to hide the fact a package has been tampered with. The generic nature of the tape also means it is not always clear at what stage in the supply line it has been applied and / or removed, which makes identifying the location of thefts difficult to determine. Furthermore, the fact that track and trace markings are provided separately to the anti-tamper tape, risks the tape still being scanned through checkpoints in the delivery journey despite having been tampered with or opened, given operators are generally just looking to identify a particular tracking barcode for scanning without inspecting the package. Most current tamperproof tape only shows the markings once the tape has been removed after application. This means that no useful information can be provided on the tape itself. This results in the tape providing a single function, that of indicating if the package has been tampered with and additional labels and tape are currently required to be placed on the package. Therefore, there is accordingly a need to provide an improved tamper-evident tape that makes progress in overcoming the aforementioned problems. SUMMARY OF INVENTION According to a first aspect of the invention, a method of preparing tamper-evident packaging is provided. The method comprises applying a customisable tape to a packaging container, wherein the customisable tape comprises a laser-imageable layer and an adhesive layer, and wherein the laser-imageable layer is formed within or adjacent to the adhesive layer. An image is created in the laser-imageable layer by irradiation with a laser before or after the application of the customisable tape to the packaging container. The customisable tape is configured such that the image is at least partially transferred onto the packaging container following application and the transferred image remains on the packaging container if a substrate of the tape is removed. There are several important benefits of such a method, as described above, of preparing tamper-evident packaging. Firstly, unlike prior art tamper-evident tapes, such a method as described above would allow for customisable tape with a customisable image to be used in the preparation of tamper-evident packaging, where the customisable image is unique to each package. This allows packages which have been tampered with to be quickly identified as well as the point of interference with the package to be identified and accurately, in a package-specific manner, reported. Such a method of preparation, which includes a customisable image, allows for the tape to provide more than just a tamper-evident functionality, such as by providing a barcode or other such scannable label which can be used for easy and potentially automated identification of the package during delivery. This has several benefits such as greater security as the package can be tracked during delivery, and therefore in the event of the loss of the package, it can be tracked back to the last known location. Furthermore, if the package is not lost but tampering has occurred, the package history can also be tracked back to the last point in the delivery journey where it was scanned and it was clear that no tampering had occurred so that the point in the delivery process where tampering occurred can be identified. In particular, whereas in prior art packaging a tracking code is provided on a separate label to the tamper-evident packaging, meaning tampering may be missed when scanning the package, in the present invention a unique code may be provided on the tamper-evident packaging itself, meaning that tampering is evident at the point of scanning the code. This prevents tampering from being missed during the delivery journey or at the point of delivery. Furthermore, the fact that a custom image can be provided in the tamper-evident packaging, means that a specific time and date of application can be provided. This helps for theft or tampering to be traced back to a specific point in the delivery journey or supply chain so that the sources of losses can be identified. It can be understood that the laser-imageable layer being formed within the adhesive layer means that it is a part of the adhesive layer, in other words, the laser-imageable layer is integrally formed within an adhesive layer. In particular, the laser imageable layer may comprise an adhesive and a laser imageable composition within the adhesive. As indicated above, irradiation with a laser can occur before the customisable tape is applied to the packaging container such that the image is at least partially transferred onto the packaging container. This allows for the customisable tape to be “shelf-ready” such that laser irradiation to produce the custom image is not required at or after the customisable tape has been applied to the packaging container. Instead, the customisable tape can be prepared well in advance of this, at a central location for example, and then stored until it is required. This may simplify the requirements of the packaging depot where the customisable tape is applied to the packaging container, as the laser-imageable equipment does not need to be present, or reduce the cost and time taken as the custom images can be formed in the customisable tape all at once. Alternatively, as indicated above, irradiation with a laser can occur after the customisable tape is applied to the packaging container such that the image is at least partially transferred onto the packaging container. This means that the information provided in the custom image is applied at the point the package is sealed. For example, an accurate date / time stamp may be applied at the stage when it is known that the package has been sealed with the correct contents, improving the traceability of any theft from within the package. Irradiation after application also allows for flexibility in the preparation of the tamper-evident packaging as the images may be applied to each package, via the laser irradiation of the laser-imageable layer of the tamper-evident tape, at the time of packaging. This allows for a change in the order of packages being packaged, or packaged without significant for-warning, without the hassle or waste of pre-imaged and stored tamper-evident tape. Similar advantages can also be achieved via laser-irradiation of the tape immediately before application to the package. As mentioned above, the laser-imageable layer in the customisable tape may be formed in an adhesive layer. This allows for easy transfer of the image onto the packaging as well as a simplified manufacturing process of the tape itself as fewer discrete layers are required to be combined to create the tape. It may also allow for a thinner tape profile as two tape features are combined into a single tape layer. Alternatively, as mentioned above, the laser-imageable layer in the customisable tape can be formed as a distinct layer. This allows for a simplified manufacturing process as discrete layers of the tape may be manufactured separately, in a more controllable way, and then combined together afterwards. Alternatively, as mentioned above, the laser-imageable layer in the customisable tape may be formed in the substrate. This reduces the amount of the image which is transferred onto the packaging as well as providing a simplified manufacturing process as fewer discrete layers of the tape need to be manufactured separately and combined. Customisable tape preferably comprises a substantially flat, long, and thin shape. The customisable tape is preferably configured such that, when it is tampered with, such as being peeled off the surface that it was applied to, it provides an indication that tampering has occurred. The terms “custom tape”, “customisable tape”, “tamper-evident tape”, and “laser-irradiated tape” are interchangeable in relation to the claimed invention. A packaging container may comprise any container, such as a box or cylinder, for containing goods which are to be delivered. A packaging container may be made of cardboard, plastic, or metal, for example. The laser-imageable layer may be any such layer which, when irradiated by a laser, produces an image which remains once the irradiation process has been completed. The laser-imageable layer may comprise a laser-imageable composition (also referred to herein as a laser-markable material or laser-imageable ink). A wide variety of solvent-based or water-based ink formulations can be used. Particular preference is at present for nitrocellulose / polyurethane based ink or a PVB-based ink, as this affords good laser imaging performance, adhesion to the substrate and environmental stability. Ink compositions comprised of acrylic, methacrylic, styrenic, acetate, urethanes, imides, cellulosic, vinyl, and binder systems, amongst others, can also be utilised. A particularly preferably laser-imageable composition is AOM (ammonium octamolybdate). The tape substrate may be understood to be the top layer of the tape, or the top layers of the tape generally, which does not provide the adhesion between the tape and the package. The laser imageable layer may be incorporated into the substrate layer, or can be between the substrate and adhesive layer, or can be incorporated into the adhesive layer. The substrate can also be understood to be the portion of tape which is peeled off the package during tampering. It can be understood that a seam in the packaging corresponds to where two or more sections of the packaging come together when the packaging is sealed. For example, where two top sections of the packaging fold down to meet in the middle of the package may be identified as the seam. A seam can be a gap between the two or more packaging sections. A tamper-evident functionality can be understood to be a feature which demonstrates to an observer, for example, a delivery driver or end recipient of the package, that the package has been tampered with. A tamper-proof feature can be understood to be a feature which is not affected by the act of being tampered with. The tape substrate may be any polymeric, e.g. polyester or polyolefin, or other suitable, known material. The substrate is typically BOPP (biaxially oriented polypropylene) but may be any transparent material through which a printed image can be viewed. Alternatively, the tape substrate may be made from paper / tracing paper such as vellum. Other polyolefins such as polyethylene and copolymers, polyester such as PET, vinyl polymers such as PVC, or any other suitable polymer known to those skilled in the art can be used. The image being partially transferred to the packaging container can be understood to mean that once the customisable tape substrate has been removed at least part of the image remains on the packaging container, this can be from residue left after the tamper-evident tape substrate layer has been removed, for example. The adhesive may be solvent-based or water-based. The adhesive may also be applied via a melt process. As previously mentioned, the laser-imageable layer preferably comprises a laser-imageable composition. Compositions imageable with UV, NIR or CO2 lasers may be prepared. In all cases, images can be written through the substrate or adhesive layer without compromising integrity; preferably such that the process does not distort or puncture the substrate or adhesive layer. Preferably, the tape is an adhesive tape, e.g. an adhesive-coated fastening tape used for temporary or, in some cases, permanent adhesion between objects. The tape can be single or double-sided. Preferably, the tape is single sided, which allows the joining of two overlapping or adjoining materials. A suitable laser-imageable composition can also be applied to substrates using a valve jet, inkjet, bubble jet or similar application systems. Various water and solvent-based laser-imageable layer formulations may be used, which allow essentially colourless / transparent or opaque white coatings to be applied. CO2, NIR and UV imageable compositions are suitable. The laser-imageable composition within the laser-imageable layer can be based on an inorganic or organic colour-former, that can be marked with a CO2 laser, NIR laser, visible laser, or UV laser. An inorganic colour-former can be an oxyanion of a multivalent metal salt, preferred examples being molybdates, tungstates and vanadates. The salts can be Group 1 or 2 metal salts, ammonium salts or amine salts. Further examples of inorganic colour formers suitable for use in the present invention can be found in WO02 / 074548. Preferred examples are octamolybdates, e.g. ammonium octamolybdate. Other examples include ammonium heptamolybdate, and amine molybdates such as bis(2-ethylhexyl)amine molybdate. Further examples are tungstates including metatungstates such as ammonium metatungstate and vanadates including metavanadates, such as ammonium metavanadate. Suitable organic colour formers include materials known to those skilled in the art as leuco dyes. Suitable leuco dyes are described in “Dyestuffs and Chemicals for Carbonless Copy Paper” presented at Coating Conference (1983, San Francisco, CA pp 157-165) by Dyestuffs and Chemicals Division of Ciba-Geigy Corp Greenboro, NC. Leuco dyes are understood to be colourless in neutral or alkaline media but become coloured when they react with an acidic or electron-accepting substance. Suitable examples include compounds such as triphenylmethanephthalide compounds, azaphthalide compounds, isoindoIide phthalide compounds, vinylphthalide compounds, spiropyran compounds, rhodamine lactam compounds, lactone and dilactone compounds, benzoyl leuco methylene blue (BLMB), derivatives of bis-(p-di-alkylaminoaryl)methane, xanthenes, indolyls, auramines, chromenoindol compounds, pyrollo-pyrrole compounds, fluorene compounds, and fluoran and bisfluoran compounds, with fluoran compounds being preferred. Particularly preferred commercial leuco dye products include the Pergascript range made by Ciba Speciality Chemicals, Basel, Switzerland and those by Yamada Chemical Co. Ltd, Kyoto, Japan. Alternative organic colour formers that can be used in the present invention are carbazoles and diacetylenes disclosed in WO2006018640 and WO2006051309, the contents of which are incorporated by reference. If an organic colour-former is present in the tape, it may also be desirable to additionally employ an acid-generating component. This can be either a photoacid generator or a thermal acid generator. Examples of photoacidgenerators include the “onium”-types, such as sulphonium and iodonium compounds. Examples of thermal acid generators include trichloromethane heterocyclics. A laser-imageable composition within the laser-imageable layer of the present invention can also comprise a colour-forming system such as metal salt hydroxyl compounds; examples include sodium alginates, sodium metaborates, sodium silicates, metal salts in combination with hydroxyl compounds, of which examples include sodium carbonate with carbohydrates such as glucose and sucrose, polysaccharides such as cellulosics, gums and starches etc. Further examples of laser-imageable metal salts include sodium malonates, gluconates and heptonates. Further examples are given in PCT / GB2006 / 003945, PCT / GB2006 / 001969 and US6888095, the contents of which are incorporated herein by reference. Any suitable source of energy may be used for creating an image in the laser-imageable layer, e.g. a laser. Suitable lasers include a CO2 laser which typically emits light in the wavelength region 9-11.5 pm. A visible band laser typically emits light in the wavelength region 400-780 nm. When using such lasers, it is preferable to employ a composition comprising a material which absorbs in this region. A UV laser typically emits light in the wavelength region 190-400 nm. When using such lasers, it is preferable to employ a composition comprising a material which absorbs in this region. Near-infrared radiation is in the wavelength range of 780 to 2500 nm. A suitable near-infrared laser can be a solid-state, diode, fibre or a diode array system. Whenever a near-infrared laser is employed, it is desirable to add to the laser imageable composition a near-infrared-absorbing component. Preferred near-infrared-absorbing compounds are those that have an absorbance maximum similar to the wavelength of the near-infrared radiation employed and have little or no visible colour. Suitable near-infrared absorbing compounds include but are not limited to the following: inorganic copper salts such as copper (II) hydroxyl phosphate; organic NIR dyes and pigments such as N,N,N’,N’-tetrakis(4-dibutylaminophenyl)-p-benzoquinone bis(iminium hexafluoro-antimonate); non-stoichiometric, reduced or doped inorganic compounds such as reduced indium tin oxide, reduced zinc oxide, reduced tungsten oxide (tungsten bronze), reduced doped tungsten oxide including an inorganic compound of the following formula MxWyOz (where M is at least one element selected from the group consisting of H, He, alkali metal, alkaline earth metal, rare earth metal, rare earth element, Mg, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In, Tl, Si, Ge, Sn, Pb, Sb, B, F, P, S, Se, Br, Te, Ti, Nb, V, Mo, Ta, Re, Be, Hf, Os, Bi and I, W is tungsten, O is oxygen, satisfying 0.001 <x / y <1; and 2.2 <z / y <3.0), reduced antimony tin oxide, or doped metal oxides such as aluminium-doped zinc oxide (AZO) and fluorine-doped tin oxide (FTO); conductive polymers such as poly polystyrene sulfonate (PEDOT); and combinations thereof. Preferably, the near-infrared absorbing compound is selected from inorganic copper salts such as copper (II) hydroxyl phosphate; non-stoichiometric, reduced or doped inorganic compounds such as reduced indium tin oxide, reduced zinc oxide, reduced tungsten oxide (tungsten bronze), reduced doped tungsten oxide including an inorganic compound of the following formula MxWyOz (where M is at least one element selected from the group consisting of H, He, alkali metal, alkaline earth metal, rare earth metal, rare earth element, Mg, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In, Tl, Si, Ge, Sn, Pb, Sb, B, F, P, S, Se, Br, Te, Ti, Nb, V, Mo, Ta, Re, Be, Hf, Os, Bi and I, W is tungsten, O is oxygen, satisfying 0.001 <x / y <1; and 2.2 <z / y <3.0), reduced antimony tin oxide, or doped metal oxides such as aluminium-doped zinc oxide (AZO) and fluorine-doped tin oxide (FTO). The near-infrared absorbing compound may be present in the second composition or composition in an amount of from 0.1 to 10 wt.%, such as from 0.2 to 5 wt.%. Examples of organic compounds that can be used in the laser-imageable layer are taught in US6911262 and are given in Developments in the Chemistry and Technology of Organic dyes, J Griffiths (ed), Oxford: Blackwell Scientific, 1984, and Infrared Absorbing Dyes, M Matsuoka (ed), New York: Plenum Press, 1990. Further examples of the NIR dyes or pigments of the present invention can be found in the EpolightTM series supplied by Epolin, Newark, NJ, USA; the ADS series supplied by American Dye Source Inc, Quebec, Canada; the SDA and SDB series supplied by HW Sands, Jupiter, FL, USA; the LumogenTM series supplied by BASF, Germany, particularly LumogenTM IR765 and IR788; and the Pro-JetTM series of dyes supplied by FujiFilm Imaging Colorants, Blackley, Manchester, UK, particularly Pro-JetTM 830NP, 900NP, 825LDI and 830LDI. The tape can be applied to a substrate unimaged, imaged or partly imaged. Where the tape is unimaged or partly imaged, it can be subsequently imaged with further information. The tape can be imaged with all required information and then applied to the package. The binder can be any known to those skilled in the art. Suitable examples include acrylics, methacrylics, urethanes, cellulosics such as nitrocelluloses, vinyl polymers such as acetates and butyrals, styrenics, polyethers, and polyesters. The binder system can be aqueous or organic solvent based. Examples of the binder systems that can be employed include the Texicryl range supplied by Scott-Bader, the Paranol range supplied by ParaChem, the Pioloform range supplied by Wacker-Chemie, the Elvacite range supplied by Lucite International Inc., The Joncryl range supplied by Johnson Polymers. The WitcoBond range supplied by Baxenden Chemicals. The laser imageable composition can also be incorporated into the tape via melt-processing. This can be via direct addition of the components into the tape-forming polymer composition, or via a masterbatch route. The carrier for a spray can be any suitable fluid system. Examples include water and organic solvents such as ethanol, isopropanol, ethyl acetate and methyl ethyl ketone. Packaging material that the present invention can be applied to include corrugate, paper, card, plastics, glass, wood, textiles, metallics such as cans and foodstuffs, pharmaceutical preparations and containers or bottle closures. Foodstuffs include fruits and vegetables, confectionary and meat products. Pharmaceutical preparations include pills and tablets. In a preferable implementation, the customisable tape is configured such that the image is only partially transferred onto the packaging container following application. Only partial transfer is beneficial as it results in only some of the image being transferred, and therefore ensures that at least some of the image is taken away with the tape substrate. Therefore, as the image is only partially transferred onto the package, neither the package nor the removed tape substrate comprises a full image. This may be beneficial for several reasons, such as if the image comprises a computer-readable code then after only partial transfer it may not be possible for a computer to read the code. This would provide a tamper-evident functionality for example. Alternatively, the only partial image transfer by itself could alert someone that tampering has occurred as there is now only a partial image on the tape as well as for the package. In a preferable implementation, the customisable tape is configured such that the image is fully transferred onto the packaging container following application. This allows for a clear and full image to remain on the package after the tape has been tampered with, allowing for greater ease in identifying any information that may be provided in the image. For example, if a computer-readable code has been provided in the image then it will be readable even after tampering as the image will fully remain on the packaging. This will also be true for any image, and any information provided by such an image. In a preferable implementation, the image in the customisable tape comprises a computer-readable code. Such a feature has numerous benefits. For example, this allows for the easy scanning, and therefore identification, of a package anywhere along its delivery route. The computer-readable code may also provide an easy means of sharing package-specific information as well as an easy means for reporting any issues with a specific package. In a preferable implementation, the computer-readable code is a QR code or a barcode. The QR code may be a secure QR code, or SQR, where an encryption key is required to access any information it contains. In a preferable implementation, the computer-readable code is scannable by a user device. This allows for an end user, who is being delivered the package, to scan the computer-readable image themselves. It also allows for easy scanning along the entire delivery process as dedicated and / or large machinery are not required to scan the package. In a preferable implementation, the user device is a handheld device comprising a camera. Such a device may be a smartphone or retail hand-held scanner, for example those produced by Axicon such as an Axicon 15200 Camera Verifier. In a preferable implementation, the customisable tape is configured such that the computer-readable code on the tape is only partially transferred to the packaging container such that a portion of the images remains on the tape after removal of the tape from the packaging container. This allows for the computer-readable image to be damaged or deformed such that it is no longer readable after tampering. Alternatively, this may provide the means to sufficiently damage the computer-readable code such that certain low-error tolerant codes cannot be read, while other high-tolerance cods can still be scanned. In a preferable implementation, the adhesive layer comprises a pressuresensitive adhesive. Preferably, in this implementation, the adhesive comprises a hot melt adhesive or a solvent-based adhesive. This allows for the easy and secure application of the customisable tape onto the packaging. A pressure sensitive adhesive can allow for the transfer of the image to differ depending on whether a portion of the tape carrying the image is applied over a void or a surface. In a preferable implementation, wherein the laser imageable layer comprises a laser imageable composition, the adhesive is arranged such that a portion of the laser imageable composition forming the image is transferred by the adhesive to the packaging container following application of the customisable tape. In a preferable implementation, the customisable tape comprises a substrate and the customisable tape is configured such that removal of the substrate leaves a portion of the laser imageable composition retained by the adhesive to the packaging container. In a preferable implementation, the customisable tape comprises a release layer positioned between the substrate and the laser imageable layer, wherein the release layer comprises an adhesive with a lower adhesive strength than the adhesive layer. Such a release layer increases the amount of the image transferred onto the packaging after the substrate has been at least partially peeled off. This is because, as the adhesion between the release layer and the substrate is less than the adhesion between the adhesive layer and the packaging, when the substrate is at least partially peeled off there is insufficient force from the adhesion between the release layer and the substrate to overcome the adhesion of a significant proportion of the tape below the release layer. In other words, the layers of the tape below the release layer are more strongly adhered to the packaging then they are to the substrate. A release layer can also provide variable image transfer depending on whether a portion of the tape is over a void / seam in the packaging container or over a surface of a packaging container, particularly when combined with a pressure sensitive adhesive layer since, at positions on the tape over a surface the greater adhesion of the adhesive layer will retain the image to the packaging container, whereas at positions over a void or seam in the packaging container the lack of adhesion of the adhesive layer can ensure the image is removed with the release layer and / or substrate. This can provide separation of the image, in the case of a computer-readable code, ensuring it is unreadable after application and removal of the tape. Preferably, the application of the customisable tape to the packaging container and the creating of the image in the laser-image layer is such that the image overlies a seam of the packaging container or a void or opening in the surface of the packaging container. In this way a portion of the tape does not lie directly against a surface of the packaging container. In such an implementation, as the tape has been placed over a seam a portion of the tape will either be poorly adhered, or not adhered at all, to the packaging and therefore an image will not be transferred or only a small proportion of the image will be transferred. Instead, the image will either remain fully, or mostly, on the sections of the tape which have been placed over the seam even when the substrate is peeled off. This effect is particularly enhanced when in combination with a release layer positioned between a substrate and adhesive layer. In a preferable implementation, the customisable tape comprises a paper layer and the laser-imageable layer is formed within the paper layer. In a preferable implementation, the customisable tape comprises a paper layer and the image is created by irradiating the laser-imageable layer through the paper layer. A paper layer provides the benefit of not needing to be removed from paper and carboard packaging in order to be correctly recycled. Preferably in the above implementation, the paper layer comprises a layer of vellum or tracing paper. The inventors have identified that such paper layers allow the laser imageable composition to be imaged through the paper layer, allowing for a paper substrate and underlying laser imageable layer. In a preferable implementation, the method further comprises creating a first image in a first region of the customisable tape by irradiation with a laser; creating a second image in a second region of the customisable tape by irradiation with a laser; wherein the customisable tape is configured such that the degree of transfer of the image to the packaging container differs in the first and second regions of the tape. This allows for different images to be created in different sections of the tape. This allow for different functionality to be provided by the tape in different sections. In another example the method may comprise creating an image that extends across the first and second regions of the customisable tape. In this way, the degree of transfer varies across the image, meaning it will be separated upon removal of the tape enhancing tamper-evident functionality. In a preferable implementation of the above implementation, the customisable tape comprises a first adhesive in the first region of the tape and a second adhesive in the second region of the tape wherein the adhesive properties of the first and second adhesives differ. The first and second adhesives may be provided within one or more of the adhesive layers, the laser imageable layer, a release layer, so as to provide the differing adhesive properties in the first and second regions of the tape. In one preferable example the first and second adhesives are provided within the laser imageable layer, the tape further comprising a uniform adhesive layer that extends over the first and second regions of the tape. This further allows a greater amount of customisability in the tape as different sections of the tape comprise different adhesives such that different functionality may be provided. In a preferable implementation of the above implementation, the first adhesive is mostly ethanol-based by weight and the second adhesive is mostly water-based by weight. In a preferable implementation wherein there is a first image in a first region and a second image in a second region, the first region of the customisable tape is configured such that the first image is only partially transferred to the packaging container and the second region of the tape is configured such that the image is substantially wholly transferred or substantially wholly retained on the tape. This provides separate functionality and customisability for the same tape as specific images can be chosen to either be fully or only partially transferred onto the box depending on the region of tape used. In a preferable implementation wherein there is a first image in a first region and a second image in a second region, the first image comprises a computer-readable code that is not readable after removal of the tape and the second image comprises a computer-readable code that is readable on the tape or the package after removal of the tape. This provides the ability to produce a customisable tape wherein certain information is no longer attainable after tampering, while some is. This would mean that tampering would be evident via the only partial transfer of an image in the first section, while such tampering could be reported, for example, via scanning of the second fully transferred image in the second image. In a preferable implementation wherein there is a first image in a first region and a second image in a second region, the method further comprises creating the first image such that it overlies a centre line of the tape; and creating the second image such that it is displaced from the centre line of the tape. This means that the tape can be placed onto a packaging seam such that a first image is impacted while a second image, placed offset from the centre line of the tape, is not. Therefore, a first image can be only partially in contact with the package, while a second image can be fully in contact with the package. In a preferably implementation, the method further comprises applying the customisable tape to the packaging container such that it seals the packaging container. This allows for the packaging container to be closed and held together by the customisable tape alone without the need for any other tape or fastener. In a preferable implementation, the step of applying the customisable tape to the packaging container such that it seals the packaging container occurs before the customisable tape has been irradiated by the laser to create a custom image. This provides greater security as it means that an image is only transferred onto the package after it has been sealed, indicating that any package which comprises an image left by a custom tape was at some point intended to be sealed. In a preferable implementation of the above implementation, the step of applying the customisable tape to the packaging container such that it seals the packaging container occurs before the customisable tape has been irradiated by the laser to create an image. In a preferable implementation, the image comprises a time stamp indicating the time the image was created or the time the tape was applied to the packaging container. According to a second aspect of the invention, a customisable tape for tamper-evident packaging is provided. The customisable tape comprises a laser-imageable layer configured such that an image is created in said laser-imageable layer by irradiation with a laser; an adhesive layer, wherein the laser imageable layer is formed within or adjacent to the adhesive layer; wherein the customisable tape is configured such that a created image is at least partially transferred onto a packaging container following application and subsequent removal of the customisable tape from the packaging container. Alternatively stated, the customisable tape is configured such that the image is at least partially transferred onto a packaging container following application of the customisable tape onto the packaging container and the transferred image remains on the packaging container if a substrate of the tape is removed. The benefits of such a tamper-evident customisable packaging tape are, for example, the provision of a tape that would allow for a customisable tape with a customisable image to be used in the preparation of tamper-evident packaging which is unique to each package. This would allow packages which have been tampered with to be quickly identified as well as for quick identification of which package it was, and from where it came, for example. It would also allow for the package to be tracked during its delivery such that a theft during delivery can be tracked backed to the last know location. In a preferable implementation, the adhesive layer comprises a pressuresensitive adhesive. Preferably, the adhesive comprises a hot melt adhesive or a solvent-based adhesive or a water based adhesive. In a preferable implementation, the laser imageable layer comprises a laser imageable composition wherein the adhesive is arranged such that a portion of the laser imageable composition forming the image is transferred by the adhesive to an application surface following application of the customisable tape. In a preferable implementation, the customisable tape comprises a substrate and the customisable tape is configured such that removal of the substrate leaves a portion of the laser imageable composition retained by the adhesive to an application surface. In a preferable implementation of the above implementation, the customisable tape comprises a release layer positioned between the substrate and adhesive layer, wherein the release layer comprises an adhesive with a lower adhesive strength than the adhesive layer. Such a release layer increases the amount of the image transferred onto the packaging after the substrate has been at least partially peeled off. This is because, as the adhesion between the release layer and the substrate is less than the adhesion between the adhesive layer and the packaging, when the substrate is at least partially peeled off there is insufficient force from the adhesion between the release layer and the substrate to overcome the adhesion of a significant proportion of the tape below the release layer. In other words, the layers of the tape below the release layer are more strongly adhered to the packaging then they are to the substrate. In a preferable implementation of the above implementation, the laser imageable layer is provided within the release layer or the adhesive layer. In a preferable implementation, the customisable tape comprises a paper layer and the laser-imageable layer is formed within the paper layer. In a preferable implementation, the customisable tape comprises a paper layer configured such the laser imageable layer may be irradiated through the paper layer to create an image in the laser imageable layer. In a preferable implementation of the above implementation, the paper layer comprises vellum. It can be understood that vellum can also be called tracing paper. This allows for the properties of tracing paper to be incorporated into the customisable tape. In a preferable implementation, the customisable tape comprises a first adhesive in the first region of the tape and a second adhesive in the second region of the tape wherein the adhesive properties of the first and second adhesives differ such that the degree of transfer of an image created in the first region of the tape differs to that of an image created in the second region of the tape. This allows for different images to be created in different sections of the tape. This allow for different functionality to be provided by the tape in different sections. This further improves the customisability of the tape. In a preferable implementation, the customisable tape comprises a release varnish layer opposite the adhesive layer such that the tape may be releasably rolled before application. This is beneficial as it allows for the customisable tape to be rolled up for easy storage and transport before it is unrolled again during the application of the tape on the package container. In a preferable implementation, the laser-imageable layer is formed as a distinct layer. In a preferable implementation, the laser-imageable layer is formed in the adhesive layer. This allows for a cheaper and easier manufacturing process due to fewer application steps being required. According to a further aspect of the invention, a method of tracking the delivery of a tamper-evident package is provided. The method comprises applying a customisable tape to a packaging container, wherein the customisable tape comprises a custom image in a laser-imageable layer and the custom image comprises a computer-readable code. The method further comprises scanning the computer-readable code at the dispatch location; preferably scanning the computer-readable code at an intermediate location during delivery; and scanning the computer-readable code at the delivery destination. This allows for the package to be tracked during delivery so that any thefts, losses, or damages on route may be quickly and easily found. It also allows for easier communication possibilities between the sender and the receiver as the scanning at delivery provides a means of direct communication between the sender and receiver. In a preferable implementation, the custom image is unique to each packaging container. This provides unique and customisable tracking for each package that requires delivery. In a preferable implementation, the method further comprises a delivery recipient scanning the computer-readable code at the delivery destination. This provides a mechanism through which the sender and receiver are provided with a means of direct communication at the end of the delivery process. In a preferable implementation, after the delivery recipient has scanned the computer-readable package, they are taken to a user interface and prompted to either accept or reject the delivery of the package. This allows for the receiver of the package to reject the package if they are not happy with the condition of said package, or if the package is not what they were expecting. This provides a quicker and easier method of identifying that a package was unsuccessfully delivered and potentially the reasons for it. In a preferable implementation, after the delivery recipient has scanned the computer-readable package, they are taken to a user interface and shown the intended delivery package. This ensures that the receiver of the package knows what they are accepting or rejecting as well as the intended condition and contents of the package which they need to accept or reject. In a preferable implementation, after the computer-readable code is scanned any or all of an identifier of the scanner, the location of scanning, and the time of scanning is provided. This provides details to the sender, for example, of the route and timings of the delivery process of the package as well as to identify the last known location, time, and person responsible for the package the last time it was scanned before being lost or stolen. In a preferable implementation, the step of scanning the computer-readable code at the delivery destination is not possible if the package has been tampered with or damaged. This failure to scan the computer-readable code results in a clear indication that the package has been tampered with or damaged during a stage of delivery. It also provides the benefit that the package is checked for infringement or damage before it can be accepted by a final recipient or sent on to the next delivery stage. In a further aspect of the disclosure there is provided a customisable tape comprising: a laser-imageable layer configured such that an image is created in said laser-imageable layer by irradiation with a laser; an adhesive layer, wherein the laser imageable layer is formed within or adjacent to the adhesive layer; wherein the customisable tape comprises a first adhesive in the first region of the tape and a second adhesive in the second region of the tape wherein the adhesive properties of the first and second adhesives differ. Preferably the adhesive properties differ such that the degree of transfer of an image created in the first region of the tape differs to that of an image created in the second region of the tape. Preferably the first and second regions are longitudinal regions running along the length of the tape. In particular the tape is preferably divided into longitudinal section providing a plurality of regions having differing adhesive properties. Preferably one region is central longitudinal region, i.e. running lengthwise over a centreline of the tape, and the second region is longitudinal region displaced from the centreline. It will be appreciated that any one or more of the features of the customisable tape defined in relation to the above aspects or in the appended claims could equally be implemented in the customisable tape of this aspect. In a further aspect of the disclosure there is provided a customisable tape comprising: a laser-imageable layer configured such that an image is created in said laser-imageable layer by irradiation with a laser; an adhesive layer, wherein the laser imageable layer is formed within or adjacent to the adhesive layer; wherein a layer of the tape comprises a paper layer. It will be appreciated that any one or more of the features of the customisable tape defined in relation to the above aspects or in the appended claims could equally be implemented in the customisable tape of this aspect. Preferably the laser imageable layer comprises a paper layer, the paper layer comprising a laser imageable composition pulped into the paper layer. In another example the customisable tape comprises a paper layer adjacent to the laser imageable layer, wherein the paper layer is configured such the laser imageable layer may be irradiated through the paper layer to create an image in the laser imageable layer. Preferably the customisable tape is configured such that the image is at least partially transferred onto a packaging container following application and subsequent removal of the customisable tape from the packaging container. BRIEF DESCRIPTION OF DRAWINGS Embodiments of the invention will now be described with reference to the figures, in which: Figure 1 depicts a customisable tape before, during, and after being tampered with, wherein the image has been partially transferred from the customisable tape onto the container; Figure 2 depicts a customisable tape before, during, and after being tampered with, wherein the image has been fully transferred from the customisable tape onto the container; Figure 3 depicts a two-layered customisable tape cross-section wherein the laser imageable layer is within the adhesive layer; Figure 4 depicts a two-layered customisable tape cross-section wherein the laser imageable layer is within the substrate layer; Figure 5 depicts a three-layered customisable tape cross-section wherein the laser imageable layer is a distinct layer from the substrate layer and the adhesive layer; Figure 6 depicts a three-layered customisable tape cross-section with a plurality of laser imageable layers with different compositions; Figure 7 depicts a four-layered customisable tape cross, wherein one of the layers is a hidden release layer; Figure 8 depicts a three-layered customisable tape cross-section wherein one of the layers is a hidden release layer; Figure 9 depicts a customisable tape before and after being tampered with where a first image has been partially transferred from the customisable tape onto the container and a second image has been fully transferred or not transferred at all from the customisable tape onto the container; Figure 10 depicts the steps of a delivery process of a package comprising customisable tape; Figure 11 depicts a flow chart of the laser imaging of the customisable tape before or after application to a package; and Figure 12 depicts a flow chart of a method of preparing tamper-evident packaging. DETAILED DESCRIPTION The present disclosure relates to a method of preparing tamper-evident packaging and a tamper-evident evident customisable packaging tape. Figures 1 and 2 depict tamper-evident packaging prepared according to the method of the present invention. In particular, Figure 1a illustrates a customisable tape 12 applied to a packaging container 10, where the customisable tape 12 comprises an image 13 that has been created in a laser-imageable layer of the customisable tape 12 by irradiation with a laser. In these examples, the package-specific image 13 is a QR code. The creation of the image may have taken place prior or after the customisable tape 12 has been applied to a packaging container 10. Figure 1b illustrates a process of removing the customisable tape 12 from the packaging container 10, i.e. by peeling back a section 18 of the tape 12, as would occur during tampering of the sealed package when trying to access the contents. As shown in Figure 1b, the customisable tape is configured such that the image 13 is at least partially transferred to the packaging container 10 so that, in this example, a first portion 15 of the image 13 remains on the tape and a second portion 16 of the image 13 remains on the packaging container 10. In this example, where the image 13 is a computer-readable code, since both the first 15 and second 16 portions of the image are unreadable after peeling of the tape 12, the code cannot be scanned by a user device after tampering. The present invention therefore provides tamper-evident functionality as the computer-readable code cannot be scanned to accept delivery or at any checkpoint in the delivery journey after tampering, a The act of tampering in the meaning of the present disclosure is the removal, for example via peeling, of the tape from the packaging. The “during-tampering” stage of tampering is depicted in Figure 1b, showing the tape 12 being peeled from the packaging 10 after it has been attached to it. Figure 1c illustrates the prepared packaging container “after-tampering” when the tape 12 has been peeled back, for example, to access the contents. Given the damage to the image 13 imparted by the peeling of the tape, even when replaced it is not possible to scan the code, thereby strengthening the tamper-evident properties of the package. The customisable tape depicted in Figure 1 is a customisable tape 12 configured such that it does not fully transfer its image(s) 13 onto the package 10 and therefore only partial image transfer 15, 16 occurs. The partially transferred image(s) 15, 16 can be seen in the “during-tampering” stage 2 depicted in Figure 1b. Figure 1 therefore demonstrates the tamper-evident properties of the customisable tape. Tamper-evident meaning the tape is altered in a way that demonstrates that tampering has occurred. This is because during tampering 2, as only a non-complete portion of the image has been transferred onto the package 16 it is not possible to read / scan the information present in the image 13. Furthermore, when the customisable tape 12 is re-placed onto the package 10 the destruction of the image is such that it is not possible to replace the tape so that the partial image 15 on the tape 12 matches the partial image 16 on the package 10, or because the tape 12 cannot remain in an accurately replaced position as there is no functioning adhesive layer to bind the peeled substrate 18 to the layers of tape left on the package 19. It is also therefore possible to read / scan the package-specific information as originally provided in the laser-created image 13. In this example, the package-specific information in the image 13 is a computer-readable code such as a QR code or a barcode, and the customisable tape 12 depicted in Figure 1 cannot be read by a computer during 2 or after 3 tampering due to the loss of readability of the computer-readable code. Therefore, as has been demonstrated in Figure 1, a customisable tape comprising tamper-evident features can be provided. The customisable tape 22 depicted in Figure 2 is a customisable tape 22 configured such that the created image 23 is substantially fully transferred onto the package 10. The tape as it would appear after application 4 can be seen in Figure 2a. The transferred image 26 can be seen in the during tampering 5 stage depicted in Figure 2b. As can be seen, the entirety of the image 23 is transferred from the customisable tape 22 onto the package via the tape left behind after peel 29 resulting in a complete QR code being present 26. Correspondingly, there is no, or only minimal, image present on the tape which has been peeled 28. Although in preferable examples the image is only partially transferred to packaging container 10 as shown in Figure 1, in some examples it may be desirable for the image to be fully transferred to the packaging container. For example, in some embodiments, just the fact that the image has been transferred onto the packaging container when the tape has been removed is sufficient to indicate that tampering has occurred. The image need not necessarily be a computer-readable code but could be some other form of image that is transferred to the package as an indicator that the tape has been removed. In some examples, the image could comprise package-specific information such as a date and time stamp indicating when it was sealed, so that it is evident, even in the absence of the tape, a time window in which the package has been opened. In the examples of Figure 2 the image 23 is again a computer-readable code wherein, as described above, the customisable tape is configured such that the image is fully transferred to the packaging container 10. In some examples, it may be preferable that the code can still be read after the tape has been removed, for example to report tampering of the package. For example, the fact that the tape is missing or partially peeled, or the fact contents are missing would provide the indicator that the package has been opened, and the transferred code provides a means to report the incident, for example via scanning of the code to with a user device to access a URL. Figures 1 and 2 therefore illustrate alternative implementations of the present invention in which a laser-irradiated custom image is either only partially transferred or substantially fully transferred to provide differing advantages. The provision of a laser imageable layer for creating a custom image provides several advantages for the implementation of custom packaging. It allows for an image, unique to the package, to be provided. Unlike prior art tamper-evident tape with generic images / text, this allows the provision of the use of machine- readable codes for individual packages, but also other possibilities, such as laser irradiating the tape after the package is sealed to provide information on the data and time that the package was secured. As will be described in more detail below the degree of transfer of the laser-irradiated custom image to the application surface may be facilitated and adapted by appropriate configuration of the customisable tape. However, the common general principle is that, by providing an adhesive layer, wherein the laser imageable layer lies within or adjacent to the adhesive layer, a custom image formed by irradiation in the laser imageable layer may be transferred by the adhesive to the application surface. The positioning and adhesive strength of the adhesive may be adapted to control the level of transfer of the image, for example by selecting an appropriate known adhesive. The provision of a number of different layers within the tape can also be used to facilitate the transfer of the image. For example, the destruction of the image achieved in Figure 1 may be achieved by selecting an appropriate adhesive such that portions overlying the packaging container are transferred but portion overlying a seam remain on the tape. For example, the adhesive may be a pressure-sensitive adhesive requiring pressure to form a bond with the underlying packaging. Where the tape is provided over a seam the lack of underlying application surface in a region of the tape results in a part of the image being retained on the tape after removal. In other examples where the tape is not provided over the seam but full over a portion of the packaging, the partial transfer can be facilitated by appropriate selection of the adhesive strength such that only a portion of the laser imageable composition is transferred, or by providing a release layer as described in more detail below. In Figure 2, the full transfer can be facilitated by the selection of appropriate adhesives within the layers of the tape, for example by providing the imageable composition within an adhesive layer, or by providing a weakly adhering release layer below a substrate layer. Examples of suitable tape constructions are described in reference to Figures 3 to 9, and within the specific examples provided below. In each case the tape comprises a laser-imageable layer configured such that an image may be created in said laser-imageable layer by irradiation with a laser, wherein the customisable tape is configured such that the image is at least partially transferred onto a packaging container following application of the customisable tape onto the packaging container and the transferred image remains on the packaging container if the tape is removed. More specifically, the laser imageable layer comprises a laser imageable composition that lies within or adjacent to an adhesive layer, such that the composition is transferred to the packaging container by the adhesive following the application of the tape. In each of the different customisable tape configurations, several elements are present. Firstly, a laser imageable layer I is used which comprises a laser imageable composition such that a customisable image is created upon laser radiation. The laser-imageable composition may be AOM (ammonium octamolybdate) or another known solvent-based or water-based ink formulation. One layer of the tape is required that comprises an adhesive quality such that the customisable tape can be attached to the packaging. The customisable tape generally further includes a substrate layer that is generally at least partially transparent such as polypropylene or paper. The customisable tape may then be configured such that the substrate layer can be substantially removed from the packaging while some material from the customisable tape remains on the packaging. Figure 3 depicts a two-layered customisable tape. The first layer 120 is a transparent or translucent material that may be referred to as a “substrate”. The substate may comprise polypropylene or similar polymer material. The second layer 220 is an adhesive layer for securing the tape to a package. The second layer 220 also comprises, within the adhesive layer, a laser-imageable composition. Therefore, the second layer 220, provides both the means of attaching the tape to the package means creating the customisable image. The adhesive may comprise a pressure-sensitive adhesive such as a hot melt adhesive with the laser imageable composition combined within the adhesive. In this way, after application and removal of the tape, some of the laser imageable composition is left on the application surface, meaning a custom image created in the tape and visible after application, is destroyed upon removal of the tape. In some examples, the first layer 120 and the second layer 220 are attached via an adhesive, where the inter-layer adhesive is preferably less strong than the adhesive used to attach the tape as a whole to a package. Figure 4 also depicts a two-layered customisable tape. The first layer 125 is a substrate comprising a transparent or translucent material, such as polypropylene. However, unlike the two-layered customisable tape depicted in Figure 3, the two-layered customisable tape of Figure 4 comprises the laser imageable composition in the first layer 125 configured such that a customisable image is created upon laser irradiation. The second layer 225 is the adhesive layer that provides for attaching the customisable tape to the package. In this example, the laser imageable composition in a region neighbouring the adhesive may be transferred with the adhesive to the packaging. In some examples, the laser imageable composition may be provided on an underside of the substrate 125. In other examples, it may be provided throughout the substrate, where only a portion of the laser imageable composition near the adhesive is transferred to the packaging. As will be described in more detail below, the inventors have also devised a paper-based customisable tape that provides the advantages of the present invention, with the additional benefit of reduced environmental impact. The two-layer structured tape of Figure 3 may comprise a paper-based substrate 120, wherein the laser imageable composition is combined into the paper substrate 120. In this way, attempted removal of the tape results in parts of the paper substrate 120 being retained by the adhesive layer 220 to the packaging container. Again this causes destruction of a custom image formed, in this case within the paper substrate, due to a portion of the substrate comprising the image being retained on the application surface. These paper-based examples have the advantage of plastic-based tapes, that tape does not need to be removed from the packaging for recycling. Therefore, Figures 3 and 4 provide alternative two-layered customisable tapes wherein the laser imageable material is either contained in the first (substrate) layer or the second layer, where the second layer comprises the material which provides the adhesive quality of the tape. Figure 5 depicts a three-layered customisable tape comprising a first layer 130, a second layer 230, and a third layer 330, wherein the third layer 330 is between the first layer 130 and the second layer 230. The first layer 130 is a substrate comprising a transparent or translucent material and may be for example a polymer such as polypropylene, or a paper-based material. The second layer 230 is the adhesive layer that provides for attaching the customisable tape to the package. As in all examples the adhesive may be a pressure-sensitive adhesive, such as a water or solvent-based adhesive. Preferably it is a hot melt adhesive. The third layer 330, which is between the first layer 130 and the second layer 230, is the laser imageable layer comprising a laser-imageable composition, such that a customisable image is created upon laser irradiation. Therefore, unlike in Figures 3 and 4, a translucent transparent substrate layer, an adhesive layer, and a laser imageable layer are provided in distinct layers. The customisable tape is configured such that upon application of the tape, the laser imageable composition within the laser imageable layer 330 is at least partially transferred to the application surface by the adhesive. The laser imageable layer may comprise an adhesive and the laser imageable composition, wherein the adhesive of the laser imageable layer 330 may have differing adhesive properties to the adhesive layer 230. For example, the laser imageable layer may be a pigmented “release layer” having lower adhesion than the adhesive layer. In this way, the substrate layer may be removed leaving at least a portion of the laser-imageable composition retained to the application surface. This structure is particularly suited for application over the seam of a packaging container where differing transfer characteristics are provided dependent on whether a portion of the image lies over the seam (i.e. a void between portions of the packaging container) or over the packaging container surface. In this case, portions of the image lying over the packaging container surface are transferred due to the action of the adhesive layer 230 (provided following the pressure of application to the surface) but portions over the seam are retained on the substrate due to the adhesive properties of the laser imageable “release” layer 330. The relative adhesive properties of the laser imageable (release) layer 330 and the adhesive layer 230 may be tuned via selection of the constituent materials. For example, the laser imageable layer may comprise a solvent (such as ethanol) based or water based adhesive containing the laser imageable composition. Examples include a combination of ethanol and polyamide and a combination of water and polyvinyl alcohol. The adhesive layer may comprise a hot melt adhesive. Figure 6 depicts a customisable tape similar to Figure 5, comprising a translucent or transparent substrate layer 130, an adhesive layer 230, and a laser imageable layer 330. However, in the example of Figure 6, the laser imageable layer 330 comprises two different regions 331, 332 having different properties. In particular the laser imageable layer 330 has a different composition in a first 331 and second 332 region, so as to provide different degrees of transfer of an image in the first 331 and second regions 332. As described above in relation to Figure 5, the adhesive properties of the laser imageable layer 330 may be tailored by the appropriate selection of the material with which the laser imageable composition is combined. In this way, a customisable tape is provided that provides differing degrees of transfer of an image in the first region to the second region. For example, in one region the laser imageable layer may comprise a relatively stronger adhesive, for example a solvent based adhesive such as a combination of ethanol and polyamide in which the laser imageable composition (such as Ammonium Octamolybdate) is provided. In another region, the laser imageable layer may comprise a relatively weaker adhesive, such as a water based adhesive, for example, a combination of water and polyvinyl alcohol in which the laser imageable composition is provided This multi-region tape structure may be utilised in a number of different ways. For example, a first image may be created in the first region 331 and a second image may be created in the second region 332. By providing differing adhesive properties, one of the images may be transferred to an application surface upon application and removal of the tape and one may be (partially) retained on the tape. In this way, a tamper-evident tape can be provided in which, for example, a first computer-readable code is unreadable after application and removal of the tape and a second computer-readable code is readable. This could provide one code which can no longer be scanned to prevent the delivery from being accepted, but provide a code which is maintained and usable to report the tampering. In another example, a computer-readable code could be provided that extends across the two regions with differing properties, such that a portion of the image is transferred to the application surface and a portion is retained on the tape. Creating a computer-readable code that extends across the two regions can facilitate the destruction of the code upon removal of the tape by ensuring one portion of the code is retained on the tape and one on the application surface, with neither being readable. As shown in Figure 6, preferably the adhesive layer extends over both first and second regions 331 and 332 of the laser imageable layer, such that the differing adhesive properties are provided by the differing constituent materials of the laser imageable layer 330. In other examples, the customisable tape could comprise a uniform laser imageable layer and instead have an adhesive layer with two or more regions with differing adhesive properties. As above the differing adhesive properties in two regions of the tape facilitate differing degrees of transfer of an image formed within or over those regions. In the example of Figure 6 the first and second regions 331, 322 are divided longitudinally. More specifically the first and second regions comprise longitudinal sections of the tape, divided across a line running along the length of the tape. In this way, the two (or more) regions having differing adhesive properties run along the length of the tape, meaning the differing image characteristics are available in any piece of tape cut from a roll of the tape. Furthermore, in the example of Figure 6, the second region 332 is provided along a central longitudinal strip of the tape. This facilitates the positioning of the second region 332 over a seam when sealing a packaging container. Since the image transfer characteristics may differ depending on whether the image is provided over a seam or applied over a packaging surface, it is advantageous to provide one region centrally to facilitate tailoring of the properties for positioning over the seam. In the sample of Figure 6, the first region 331 is provided by two longitudinal sections of tape laterally displaced from the centreline of the tape, i.e. adjacent to the second region in the width direction of the tape. As will be described below, Figure 9 illustrates a possible use of the tape of Figure 6. In particular, laser irradiation is used to form a first computer-readable image 94 in a first region of the tape, laterally displaced from the centreline, such that the image lies over the package surface. This region may have adhesive properties so as to fully transfer the image of the computer-readable code to the package surface. Laser irradiation is further used to create a second computer-readable image 97 in a second region overlying the centreline of the tape. The adhesive properties in this region may be selected to cause only partial transfer of the image such that it is not readable after removal of the tape. Therefore, Figure 6 depicts how a customisable tape can be produce such that image is formed within the tape are either fully or only partially transferred onto the packaging depending on if they are created in a first material 330 or in a second material (in a first 331 or second 332 region of the tape). It should be noted that this is not merely possible in three-layered tape configurations and that a customisable tape which comprises differing adhesive properties in a plurality of regions, with other layer constructions would also be effective as providing regions of differing image transfer. Figure 7 depicts a four-layered customisable comprising a first layer 140 comprising a substrate, a second layer 240 comprising an adhesive layer, a third layer 340 comprising a laser imageable layer, and a fourth layer 440 comprising a hidden release layer, wherein the third layer 340 is in between the second layer 240 and the fourth layer 440 and the fourth layer 440 is in between the first layer 140 and the third layer 340. Specifically, the fourth layer 440 is a hidden release layer which cannot be detected visually and provides for the last to be easily separated when peeled. The hidden release layer 440 allows for the substrate, layer 140, to be easily peeled off the package and therefore allows some of the other layers in the tape, which comprise the image, to remain on the packaging. This allows for the image to remain predominantly intact as it has been fully transferred onto the packaging. Therefore, even after tampering, the computer-imageable code in the image can still be scanned successfully. As above the substrate 140 may be an at least partially transparent polymer such as polypropylene. The laser imageable layer 340 may comprise the laser imageable composition as described above, within an adhesive or non-adhesive material. The hidden release layer may comprise a relatively weak adhesive. For example, the hidden release layer may be a water- or solvent-based adhesive depending on the adhesion required. For example, a combination of ethanol and polyamide can be used for a relatively stronger adhesive release layer and a combination of water and polyvinyl alcohol for a relatively weaker adhesive layer. The provision of a hidden release layer can provide additional functionality. In particular, where applied over the box seam (i.e. at least partially over a void between packaging surfaces) a hidden release layer can facilitate the destruction of the image (such as a computer-readable code). In particular, when the image lies partially over a void and partially over a packaging surface differing image transfer properties are achieved. Where a portion of the image lies over the packaging surface, the underlying adhesive layer 240 provides sufficient force to retain the portion of the image on the package surface. Where a portion of the image overlies the seam (or a void more generally) the adhesive properties of the hidden release layer are sufficient to retain the portion of the image to the substrate. In this way, the image is broken and separated between the substrate and application surface as shown in Figure 1B, meaning, where the image is a computer-readable code, it cannot be scanned after application and removal of the tape. Figure 8 depicts a customisable tape configured as a three-layered customisable tape comprising a first layer 130 comprising a substrate, a second layer 230 comprising an adhesive layer, and a third layer 430 comprising a hidden release layer, wherein the third layer 430 is between the first layer 130 and the second layer 230 The first layer 130 is a transparent or translucent material, for example a polymer such as polypropylene or a paper such as vellum. The second layer 230 is the adhesive layer that is configured for attaching the customisable tape to the package, however it also configured such that a customisable image is created upon laser irradiation (i.e. it contains the laser imageable composition). The adhesive layer could comprise any pressure sensitive adhesive, preferably a hot melt adhesive. The third layer 430, which is between the first layer 130 and the second layer 230, is a hidden release layer and may comprise materials as described in reference to Figure 7. Figure 9 depicts a customisable tape 92 in which two different images, in this case both computer-readable codes 94, 97, have been created in the laser imageable layer. The tape is configured such that at least one image 93 is only partially transferred onto the packaging 10 while at least one other image 94 is fully transferred onto the packaging 10. Therefore, as can be seen in the during 7 and after 8 tampering diagrams of Figure 9, at least one image 94 can still have its information read, for example as a barcode, while another image 97 cannot, for example as a QR code. This could be useful when providing a tape with tamper-evident functionality as it is possible to prevent a user from scanning a code to accept delivery (unreadable QR code) as well as providing a method of reporting the tampering with the package, (using the scannable barcode). This type of multiple-code tape can be achieved in a number of ways. Firstly the two codes with differing image transfer properties can be achieved by using a plurality of regions of the tape with differing adhesive properties, for example, different regions of the laser imageable layer as demonstrated in Figure 6. Alternatively, the functionality demonstrated in Figure 9 can be provided by using a tape which uses different computer-readable codes with varying error tolerance as discussed in relation to customisable tape 3 below. For example, a computer-readable code with a high degree of error tolerance could be used to provide the code which can be scanned after tampering 94, and a code which has a low error tolerance can be used to provide a code which cannot be scanned after tampering 93, 97 when used in combination with one of the tape configurations described in relation to customisable tape 3. Alternatively, the functionality demonstrated in Figure 9 could be provided by providing the different computer-readable codes 93, 94 in different positions on the tape so that the tape can be positioned so that one overlies a seam / void in the packaging container and another overlies a surface of the packaging container. A simple way to achieve this is to carry out the laser imageable to create one coder overlying a longitudinal centreline of the tape and another code displaced from the centreline. In this way, when placing the tape so that a seam in the packaging approximately underlies the centreline, the differing image transfer characteristics are provided. Figure 9 also demonstrates that text 95, 96 may also be created within the laser-imageable layer to either provide additional information or instructions. For example, where there is a plurality of images within a tape the end recipient of the package may be instructed to scan a first computer-readable code first and then a second computer-readable code. Any image which can be displayed in two dimensions can be recreated within the laser-imageable layer. Text may also be used to indicate when the package was sealed. For particularly valuable contents, it may be advantageous to image the tape to create the image after sealing the contents, or at specific points in the delivery journey so that the point of tampering can be identified. Figure 10 depicts the process of sending and tracking a package comprising customisable tape. Specifically, it demonstrates how a package can be sealed and sent to a customer, can be tracked during the entire process, and an improved customer delivery experience can be achieved. In the first step 1010, the customisable tape is placed onto the package, preferably over a meeting point of two sections of the package such that the package is sealed. The customisable tape may have a package-specific image irradiated into the laser imageable layer that may identify the specific package and allow for tracking and / or may include an indication of date and time of packaging, and or any information that is required to those handling the package such as any one of: weight; preferred travel orientation; chemical or other such warning; and if the package is delicate, for example. In this example, at the first step 1010, the image in the customisable tape comprises a computer-readable code. The skilled person would be aware of other methods of tracking a package during delivery, for example, the image may contain a package-specific serial number which is recorded. In the second step 1020, the package-specific computer-readable code is scanned at the location of packaging, for example in a packaging distribution centre. This means that the specific package can be identified as being packed with the required goods and sealed ready for it to be sent. This means that the specific package can be identified as being packed with the required goods and sealed ready for it to be sent onwards in the delivery process. The information provided by the computer-readable code may impart knowledge to a central server of one or more of: the time at which the packing process had been completed by, the location of packing, who assembled the package, and the condition or general look of the package just after being packed. In step three 1030, the package-specific computer-readable code is scanned during the delivery process. For example, every time that the package changes it’s mode of transport (from delivery vehicle to airfreight to train, for example) and / or every time that it reaches a note of the delivery network the packagespecific computer-readable code is scanned and the information from the scan is sent to a server. At each stage, it may be possible for the package handler to report at the same time as when scanning occurs that the package has been tampered with or that it appears possible that there may have been tampering. Other information which may be transmitted at the same time the scanning could be one or more of: time of scan, the employee who is doing the scanning, or the weight or other attributes of the package. In this way, the package's entire delivery history and condition can be accurately and easily tracked. For example, if during transit it becomes clear that the package has been tampered with then it is possible for us to be immediately reported as well as for it to be easily made at which stage of the delivery process to the tampering occur. This allows for both quick and accurate determination of both how and when tampering occurred. In the fourth step 1040, the unique computer-readable code is scanned by the customer on delivery of the package. Preferably the person delivering the package does not leave until the package has been accepted by the customer. This would be after either step six 1060 or seven 1070. The customer may have a specific or general app which is configured such that it can scan the computer-readable code. Alternatively, or in addition to such an app, the client may use the inbuilt functionality of the handheld device’s camera and software to scan the computer-readable code, such as usually done with a QR code. Another alternative would be for the delivery employee to provide a handheld or other such device with a camera that can be used by the customer to scan the package. In the fifth step 1050, it is determined whether the scan of the unique computer-readable code has been successful or not and whether or not a package is an acceptable condition for the client to accept it. The determination may occur in an app or specific handheld device used for the scanning of the computer-readable code. Step six 1060, describes what happens if either the scan is unsuccessful and / or if the package is in an unacceptable condition. Therefore, this step describes what happens if a scan is not possible, if the package is in an unacceptable condition, or if it is not possible to scan the computer-readable code and the package is in an unacceptable condition. Step six 1060, shows that the customer will be prompted to reject the delivery of the package such that it can returned to the packing centre, for example. Alternatively, the delivery driver will be alerted to not allow the customer to take delivery of the package and to take the package back to the packaging centre, or another node in the delivery system from where it can then be inspected to determine if tampering has occurred. Preferably, the customisable tape will comprise a computer-readable code which can be scanned even if the package has been tampered with. For such a configuration wherein the tape comprises both scannable and unscannable after tampering computer-readable codes see Figure 9 and the relevant discussion of it in the description above. As at least one computer-readable code can still be read after this allows the customer or delivery driver to scan it and use it as a portal to report that the package has been tampered with and that the main computer-readable code cannot be scanned, or that the package has is not in an acceptable condition for whatever reason. Step seven 1070, describes what occurs if the scan is both successful and the package is in an acceptable condition for the customer to take delivery. The customer may feel that it is acceptable to accept a package with minor issues in its condition, for example only cosmetic damage to the packaging, if the item being delivered is of low value or is not particularly delicate or dangerous. However, for expensive or potentially dangerous or delicate items being delivered the customer may not be able to accept delivery, even if they do not mind the condition issues, if during the scanning process they report any condition issues at all. Figure 11 depicts the different possible assembly steps of producing a package comprising custom laser-imageable tape. Primarily, the step of laser irradiating the customisable tape to create a package unique image can be carried out before or after the tape has been applied to the package, as well as a combination of creating an image both before and after application. In step 1110 the customisable tape structure is produced, with the different layers of the customisable ap either being produced separately and combined or in one manufacturing step. Manufacturing the different layers of the tape separately may allow for greater control in the manufacture of each layer as well as the amount of adhesion between layers. Manufacturing the layers at the same time may simplify and reduce the cost of manufacture. As previously mentioned, the tape substrate, or any other layer, may be of a pulped-paper construction. Specifically, such a layer may further comprise laser-markable material such that an image may be created via laser irradiation. The laser-markable material could beAOM (ammonium octamolybdate). Such a pulped paper layer, comprising laser imageable functionality, may be manufactured in the following steps; soak paper in water and add ammonium octamolybdate; mix in high shear blender for a short period of time (for example, 30 seconds); separate the saturated paper mixture from the solution; spread pulped paper onto a liquid pervious surface (such as a fine-meshed sieve) of the required shape and place a weight on top to remove remaining liquid, remove the weight and place a layer of adhesive / release layer onto at least one side of the sheet of pulped paper and then re-place the weight; dry in an oven (at a temperature of 70 degree Celsius, for example) until remaining liquid has been removed and the adhesive / release layer has been set if required. Minor alterations in the construction of the pulped-paper layer will be obvious to the skilled person, but the step of introducing a laser-markable material which provides the ability to create an image via laser irradiation is important. Step 1120 indicates the divergence in approaches to package assembly based on whether the tape has been spooled, in other words, rolled up for storage or movement of the tape, or not. In step 1130, the tape is irradiated before being spooled / rolled ready for storage or transport. This allows for the tape to be simply unspooled at the point of packaging such that a laser irradiation machine and technicians do not need to be used at the point of package assembly. This allows for a simpler and more universal application as specific machinery and users do not need to be present at the point of assembly of the package. Such a method would require knowledge of when packages were going to be packaged before the tape was irradiated and spooled, as well as the relative order of packages being packaged, for there to be package-specific information in the images. Such systems are common in “just in time” manufacturing and assembly systems, especially in vehicle assembly lines where prebuilt and vehicle-specific components are manufactured and assembled beforehand and delivered to the manufacturing site just in time to be assembled into a specific and unique vehicle. In step 1140, the tape is irradiated after being unspooled from a spool / roll of the tape. For example, the tape could be irradiated either just before application to the package or after the tape has been applied to the package. This allows for a package to be sealed or otherwise applied with a tape that comprises a package-specific image or images without having to have prior knowledge of the package or even the order in which the package will be assembled relative to other packages. In step 1150, the tape is irradiated both before being spooled / rolled and after being spooled / rolled. This allows for generic information for a certain packager to be applied to the packages, such as the name or logo of a company, that will be on all packages which reduces the amount of laser irradiation required at point of packaging. Other information, such as a package-specific computer-readable code may be created in the tape before being rolled, similar to in step 1130, but additional package-specific images created in the tape, such as a time of packaging stamp or additional warning or information, after the tape has been unrolled and just before or after application to the package. Alternatively, all package-specific images may be created in the tape after being unspooled / unrolled. This allows for the amount of irradiation being undertaken at the point of packaging to be reduced while still allowing for package-specific information to be included without prior information being required. Figure 12 depicts the method steps of applying a customisable tape to a packaging container. In step 1210, the customisable tape is applied to a packaging container, wherein the customisable tape can be any of the customisable tapes as described. In step 1220, an image is created in the laser-imageable composition of the customisable tape by irradiation with a laser before or after application to the packaging container. In step 1230, the image in the customisable tape is at least partially transferred onto the packaging container following application and subsequent removal of the customisable tape from the packaging container. Broadly, three tapes can be provided: customisable tape 1, wherein the image is only partially transferred such that any information cannot be read after tampering; customisable tape 2 wherein the image is fully transferred such that any information can be read after tampering; and customisable tape 3, wherein whether information can be read after tampering depends on how the information is provided. Customisable tape 1, customisable tape 2, and customisable tape 3 may comprise any of the two-layer, three-layer, or four-layer construction types shown in Figures 3 to 7. Generally, such tapes may comprise any plurality of layers. Generally, the tapes which are suitable for the use as customisable tape 1 comprise features such that when the tape is applied and then peeled off a package a substrate is peeled away, however some of the tape remains, including a sufficiently large proportion of the image so that the information can be successfully read, on the package. Such an image transfer is depicted in Figure 2. Therefore, customisable tape 1 is configured such that one or more of the top layers, or more generally the substrate, of the tape are bonded less strongly to one or more of the bottom layers of the tape than the one or more bottom layers of the tape are bonded to the packaging. Generally, the tapes which are suitable for the use as customisable tape 2 comprise features such that when the tape is applied and then peeled off a package a substrate is peeled away, however some of the tape remains. Importantly, only a partial proportion of the tape below the substrate remains on the package. Therefore, only partial image transfer occurs and any information within the image cannot be scanned. The bond between the substrate of the tape and laser imageable layer(s) is stronger than for customisable tape 1 such that some of the laser-imageable layer is peeled off with the substrate during tampering. An example of the above is depicted in Figure 1 where only partial image transfer is achieved. Customisable tape 3 is configured such that whether any information present in an image is readable after tampering depends on the type of image used and its relative error tolerance. This allows for one tape to be used as customisable tapes 1 or 2 would be used as the packager would merely have to select the relevant computer-readable code such that it either is, or is not, scannable after tampering. Alternatively, different computer-readable codes can be used on the same tape to provide a single tape with separate images which are and are not scannable. We will now discuss different specific examples of how customisable tape 1, customisable tape 2, and customisable tape 3 can be created. Examples Table 1 High error tolerance before Low error tolerance before High error tolerance after Low error tolerance after Customisable tape A Scannable Scannable Scannable Scannable Customisable tape B Scannable Scannable Scannable Scannable Customisable tape C Scannable Scannable Not scannable Not scannable Customisable tape D Scannable Scannable Scannable Scannable Customisable tape E Scannable Scannable Not scannable Not scannable Customisable tape F Scannable Scannable Not scannable Tape placement dependent Customisable tape G Scannable Scannable Tape placement dependent Tape placement dependent Customisable tape H Scannable Scannable Scannable Scannable Customisable tape I Scannable Scannable Not scannable Not scannable Customisable tape J Scannable Scannable Not scannable Scannable Table 1 provides example results for different customisable tapes according to the present invention, indicating whether or not a computer-readable code can, or cannot, be scanned after tampering (application and removal of the tape) for a customisable tape using a high error-tolerant design and for a customisable tape using a low error-tolerant design. The results in Table 1 are split into results before and after tampering, as well as for high error-tolerant and low error-tolerant computer-readable codes. Examples of high error-tolerant codes include Q and H-type Reed-Solomon codes. Low error-tolerant codes include L-and M-type Reed-Solomon codes. It will be appreciated that the above table is relevant to a tape placed anywhere on the package, whether it be on a uniform wall of the package, a curve of the package, a corner of the package, or over a seam of the package. For brevity, below the tape position will be described as either on a seam of the package or not on a seam of the package. This is because if the tape is placed over a seam there may be portions of the tape where it is not in contact with the packaging as a gap may be created, as seen in Figures 1 and 2, referred to as seam 14. For ease of description, a QR code will be used in these examples as the computer-readable code. Other computer-readable codes, such as barcodes, could be used instead, or alongside, QR codes. The relative amount of error tolerance of the computer-readable code depends on the type of computer-readable code used. For example, certain types of QR codes are error-tolerant to a certain level of damage to the QR code. For example, if the QR code has had 15% of the code damaged, the QR code as a whole may still be read. There are four degrees of error tolerance, or in other words the amount to which the QR code is tolerant to damage, which are: L, 7%; M, 15%; Q, 25%; and H, 30%. For brevity, error tolerance levels L and M have been combined as “low error tolerance” and Q and H have been combined as “high error tolerance”. How error tolerance is achieved in QR codes is via Reed-Solomon error correction. Tampering in this example takes the form of peeling or otherwise removing the tape, either fully or only partially, off the package. Specifically, before tampering relates to the package the moment after it has been correctly assembled and sealed, while after tampering relates to after the tape has been fully or partially taken off of the package and either left off or at least partially re-placed onto the package. Other forms of tampering would be well known to the skilled person. As can be seen, all tapes used are scannable before tampering. Customisable tape A is scannable after tampering regardless of the QR code design, and therefore the error tolerance, used. Customisable tape A comprises a three-layer construction as shown in Figure 5. Customisable tape A comprises a three-layered customisable tape comprising a substrate layer 130, an adhesive layer 230, and a third layer comprising the laser-imageable composition 330; wherein the third layer 330 is between the first layer 130 and the second layer 230. In customisable tape A, the adhesive layer 230 comprises 50% Technomelt EM362 and 50% toluene by parts per hundred. Furthermore, in customisable tape A, the third layer 330, comprising the laser-imageable composition, comprises: 35% ammonium octamolybdate, 19% ethyl acetate; 19% ethanol; 12% polyurethane; 5% nitrocellulose; 0.75% reduced tungsten oxide; and a heat transfer agent such as 9.25% zirconium oxide by parts per hundred. Customisable tape A is readable before and after tampering as the discreet layer comprising the laser-imageable composition 330 is adhered more strongly to the adhesive layer 230 than to the substrate layer 130. When the substrate is removed during tampering a substantial proportion of the discreet layer comprising the laser-imageable composition 330 and the adhesive layer 230 remain on the package. Therefore, the image has been substantially transferred onto the package such that it is readable after tampering. Substantially transferred in this example is transferred such that more than 93% of the QR code is transferred so that any QR code can be used and still scanned. Customisable tape B is scannable after tampering no matter the QR code design, and therefore the error tolerance, used. Customisable tape B comprises a three-layer construction as shown in Figure 5. Customisable tape B comprises a substrate layer 130, an adhesive layer 230, and a third layer comprising the laser-imageable composition 330; wherein the third layer 330 is between the first layer 130 and the second layer 230. Customisable tape B is different to customisable tape A in that the third layer 330 comprises: 45% water, 5% polyvinyl alcohol, and 50% ammonium octamolybdate by parts per hundred. The adhesive layer 230 comprises 50% Technomelt EM362 and 50% toluene by parts per hundred. Customisable tape B is readable before and after tampering as the discreet layer comprising the laser-imageable composition 330 is adhered more strongly to the adhesive layer 230 than to the substrate layer 130. When the substrate is removed during tampering a substantial proportion of the discreet layer comprising the laser-imageable composition 330 and the adhesive layer 230 remain on the package. Therefore, the image has been substantially transferred onto the package such that it is readable after tampering. Substantially transferred in this example is transferred such that more than 93% of the QR code is transferred so that any QR code can be used and still scanned. Customisable tape C is not scannable after tampering regardless of the QR code design, and therefore the error tolerance, used. Customisable tape C is configured as shown in Figure 5. Therefore, customisable tape C comprises a three-layered customisable tape comprising a substrate layer 130, an adhesive layer 230, and a third layer comprising the laser-imageable composition 330, wherein the third layer 330 is between the first layer 130 and the second layer 230. In this specific example, the third layer comprising the laser-imageable composition 330 comprises: 45% ethanol, 20% Casamid 878, and 35% ammonium octamolybdate by parts per hundred. The adhesive layer 230 comprises 50% Technomelt EM362 and 50% toluene by parts per hundred. Customisable tape C is not readable after tampering as the discreet layer comprising the laser-imageable composition 330 adheres less strongly to the adhesive layer 230 than to the substrate layer 130. When the substrate is removed during tampering a substantial proportion of the discreet layer comprising the laser-imageable composition 330 remains adhered to the substrate. Therefore, the image has not been substantially transferred onto the package and thus is not readable after tampering. Substantially not transferred in this example is transferred such that no more than 69% of the QR code is transferred so that no QR code can be used to make the QR readable. Customisable tape D is configured similarly to the tape shown in Figure 3 which comprises a two-layered construction. The first layer 120 is the substrate of the tape and the second layer 220 is an adhesive layer which comprises the laser-imageable composition. In customisable tape D, the second layer 220 comprises: 50% Technomelt EM362, 30% toluene, and 20% ammonium octamolybdate by parts per hundred. Customisable tape D is readable before and after tampering as the adhesive layer comprising the laser-imageable composition 220 is adhered more strongly to the packaging 10 than to the substrate layer 120. When the substrate is removed during tampering a substantial proportion of the laser-imageable composition 220 remains on the package. Therefore, the image has been substantially transferred onto the package such that it is readable after tampering. Substantially transferred in this example is transferred such that more than 93% of the QR code is transferred so that any QR code can be used and still scanned. Customisable tape E is configured as shown in Figure 8. Customisable tape E comprises a substrate layer 130, an adhesive layer 230, and a hidden releases layer 430, wherein the hidden release layer 430 is between the substrate layer 130 and the adhesive layer 230. The adhesive layer 230 comprises: 50% Technomelt EM362, 30% toluene, and 20% ammonium octamolybdate by parts per hundred. The hidden release layer 430 comprises: 70% ethanol and 30% Casamid 878 by parts per hundred. Customisable tape E is not readable after tampering as the release layer comprising the laser-imageable composition 430 is adhered less strongly to the adhesive layer 230 than to the substrate layer 130. When the substrate is removed during tampering a substantial proportion of the layer comprising the laser-imageable composition 430 remains adhered to the substrate. Therefore, the image has not been substantially transferred onto the package and thus is not readable after tampering. Substantially not transferred in this example is transferred such that no more than 69% of the QR code is transferred so that no QR code can be used to make the QR readable. Customisable tape F is configured as shown in Figure 8, which comprises a substrate layer 130, an adhesive layer comprising a laser-imageable composition 230, and a hidden release layer 430, wherein the fourth layer 430 is between the first layer 130 and the second layer 230. The hidden release layer 430 comprises 90% water and 10% Polyvinyl Alcohol by parts per hundred. The adhesive layer 230 comprises: 50% Technomelt EM362, 30% toluene, and 20% ammonium octamolybdate by parts per hundred. If it is desired to have the computer-readable code be scannable after tampering, then customisable tape F should not be placed over a seam. This is because the tape should be fully in contact with the packaging to ensure that the required transfer of the image occurs. Even in this case, only high error-tolerant QR codes can be used due to the transfer of the image not being sufficient for low error-tolerant QR code designs. If it is desired to have the computer-readable code be not scannable after tampering, then customisable tape F should be placed over a seam. This is because the tape should not be fully in contact with the packaging to ensure that the required partial transfer of the image occurs. In this case, the QR code will not be scannable regardless of the QR code design chosen. Customisable tape G is configured as shown in Figure 7 which is a four-layered tape comprising a substrate layer 140, an adhesive layer 240, a layer comprising the laser-imageable composition 340, and a hidden release layer 440. The hidden release layer 440 comprises: 70% ethanol and 30% Casamid 878 by parts per hundred. The adhesive layer two 240 comprises 50% Technomelt EM362 and 50% toluene by parts per hundred. If it is desired to have the computer-readable code be scannable after tampering, then customisable tape G should not be placed over a seam. This is because the tape should be fully in contact with the packaging to ensure that the required transfer of the image occurs. In this case, the QR code will be scannable regardless of the QR code design chosen. If it is desired to have the computer-readable code be not scannable after tampering, then customisable tape G should be placed over a seam. This is because the tape should not be fully in contact with the packaging to ensure that the required partial transfer of the image occurs. In this case, the QR code will not be scannable regardless of the QR code design chosen. Customisable tape H is configured as shown in Figure 7. Customisable tape H comprises a four-layered tape comprising a substrate layer 140, an adhesive layer 240, a layer comprising the laser-imageable composition 340, and a hidden release layer 440. The hidden release layer 440 comprises 90% water and 10% Polyvinyl Alcohol by parts per hundred. The adhesive layer two 240 comprises 50% Technomelt EM362 and 50% toluene by parts per hundred. Customisable tape H is readable before and after tampering as the distinct layer comprising the laser-imageable composition 340 is adhered more strongly to the adhesive 240 than to the substrate layer 140. When the substrate is removed during tampering a substantial proportion of the laser-imageable composition 340 remains on the package. Therefore, the image has been substantially transferred onto the package such that it is readable after tampering. Substantially transferred in this example is transferred such that more than 93% of the QR code is transferred so that any QR code can be used and still scanned. Customisable tape I is configured as shown in Figure 4 and comprises a first layer 125 being a substrate and a second layer 225 being an adhesive layer, wherein the substrate comprises material (such as ammonium octamolybdate) configured such that a customisable image is created upon laser irradiation. Preferably the first level 125 is made from pigment pulped into a paper layer. The manufacturing process and potential composition of such a pulped layer has been described previously and, therefore, will not be repeated for brevity. The adhesive layer 225 comprises 50% Technomelt EM362 and 50% toluene by parts per hundred. Customisable tape I is not readable after tampering as the laser-imageable composition is within the substrate layer 125 itself. Therefore, the image will not have been substantially transferred onto the package, as even though some will be transferred most will stay within the substrate layer 125, and thus will not be readable after tampering. Substantially not transferred in this example is transferred such that no more than 69% of the QR code is transferred so that no QR code can be used to make the QR readable. Customisable tape J is configured as shown in Figure 5. Customisable tape J comprises a substrate layer 130, an adhesive layer 230, and a layer comprising the laser-imageable composition 330, wherein the third layer 330 is between the first layer 130 and the second layer 230. Specifically, the first layer 130 is created from material such as Vellum or other such tracing paper. The adhesive layer 230 comprises 50% Technomelt EM362 and 50% toluene by parts per hundred. The third layer 330 comprises: 35% ammonium octamolybdate, 19% ethyl acetate; 19% ethanol; 12% polyurethane; 5% nitrocellulose; 0.75% reduced tungsten oxide; and a heat transfer agent such as 9.25% zirconium oxide by parts per hundred. Customisable tape J is readable after tampering depending on the type of QR code used, and therefore the level of error-tolerance provided. The distinct layer comprising the laser-imageable composition 330 adheres relatively more strongly to the adhesive 230 than to the substrate layer 130, but the difference is not relatively large. When the substrate is removed during tampering a proportion of the laser-imageable composition 330 remains on the package. However, between 16% and 24% of the image remains adhered to the substrate such that the low error-tolerant QR codes cannot be read, but the high error-tolerant QR codes can.

Claims

1. A method of preparing tamper-evident packaging, the method comprising: applying a customisable tape to a packaging container, the customisable tape comprising a laser-imageable layer and an adhesive layer, wherein the laser-5 imageable layer is integrally formed within the adhesive layer or adjacent and distinct to the adhesive layer: whereinwhen the laser-imageable layer is integrally formed within the adhesive layer the laser-imageable layer and the adhesive layer are provided by a single layer that comprises an adhesive and a laser10 imageable composition within the adhesive;creating an image in said laser-imageable layer by irradiation with a laser before or after application to the packaging container; whereinthe customisable tape is configured such that the image is at least partially transferred onto the packaging container following application and 15 subsequent removal of the customisable tape from the packaging container; and the method further comprises applying the customisable tape to the packaging container such that it seals the packaging container; whereinthe step of applying the customisable tape to the packaging container such that it seals the packaging container occurs before the customisable tape 20 has been irradiated by the laser to create an image.

2. The method of claim 1, wherein the customisable tape is configured such that the image is only partially transferred onto the packaging container following application.

3. The method of any previous claim, wherein the image comprises a 25 computer-readable code.

4. The method of any of claims 3, wherein the customisable tape is configured such that the computer-readable code on the tape is only partially transferred to the packaging container such that a portion of the image remains on the customisable tape after removal of the tape from the packaging container.19 06 255. The method of any preceding claim wherein the laser imageable layer comprises a laser imageable composition wherein the adhesive is arranged such that a portion of the laser imageable composition forming the image is transferred by the adhesive to the packaging container following application of the 5 customisable tape.

6. The method of claim 5 wherein the customisable tape comprises a substrate and the customisable tape is configured such that removal of the substrate leaves a portion of the laser imageable composition retained by the adhesive to the packaging container; wherein the customisable tape comprises a 10 release layer positioned between the substrate and the laser imageable layer, wherein the release layer comprises an adhesive with a lower adhesive strength than the adhesive layer.

7. The method of claim 6 wherein application of the customisable tape to thepackaging container and the creating of the image in the laser-image layer is such 15 that the image overlies a seam between two closure flaps of the packaging container.

8. The method of any preceding claim wherein the customisable tape comprises a paper layer and the laser-imageable layer is formed within the paper layer.20 9. The method of any one of claims 1 to 7, wherein the customisable tapecomprises a paper layer and the laser imageable layer is adjacent to the paper layer, wherein the image is created by irradiating the laser-imageable layer through the paper layer.

10. The method of any previous claim wherein the method comprises:25 creating a first image in a first region of the customisable tape byirradiation with a laser;creating a second image in a second region of the customisable tape by irradiation with a laser;wherein the customisable tape is configured such that the degree of transfer of the image to the packaging container differs in the first and second regions of the tape.

11. The method of claim 10, wherein the customisable tape comprises a first 5 adhesive in the first region of the tape and a second adhesive in the second regionof the tape wherein the adhesive properties of the first and second adhesives differ.

12. The method of any of claims 10 or 11, wherein the first region of the customisable tape is configured such that the first image is only partially 10 transferred to the packaging container and the second region of the tape is configured such that the image is substantially wholly transferred or substantially wholly retained on the tape.1513. The method of any of claims 10 to 12 where the method comprises: creating the first image such that it overlies a longitudinal centre line of the tape;creating the second image such that it is laterally displaced from the longitudinal centre line of the tape.

Images