Locking / unlocking system

Abstract

To provide a locking / unlocking system which has a high crime prevention property, reduces the consumption of a battery, and does not require communication equipment in a facility where a lock is installed.SOLUTION: A locking / unlocking system includes an unlocking code creation device for creating a two-dimension code having information related to an inputting code, and a lock, in which; the input code has time information related to a time to unlock the lock, target information for identifying a target lock, and biometric authentication information; and the lock has an image acquiring means, a biological information reading means, a two-dimension code reading means, a time recognition function, specific information for specifying the lock, and a storage unit, the locking / unlocking system being configured to cause the two-dimension code reading means to read a two-dimension code and to cause the biological information reading means to read an image relating to biological information, and acts an unlocking action on condition that the information read from the two-dimension code has at least target information matching specific information stored in the storage unit and biological authentication information is contained in the information read from the image.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a locking and unlocking system for homes, accommodation facilities, and the like. [Background technology]

[0002] Locks are installed at the entrances of detached houses and apartments, and people enter and exit by unlocking them. In addition, the entrances are locked when people go out. When selling or renting a house or condominium, a viewing is conducted prior to signing a contract. When viewing a vacant room, a real estate agent or a representative from the management company will often accompany you and lock and unlock the property. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7250370 Summary of the Invention [Problem to be solved by the invention]

[0004] Due to a shortage of manpower, there are cases where real estate agents are not present when viewing vacant rooms, etc., and viewings are conducted by those who wish to view the property alone. For example, if the front door is locked with a manual key, a person wishing to view the property will receive a key from the real estate agent or the like and will be able to operate the key themselves to lock and unlock the property. However, this method poses a security risk as people wishing to view the property may have a duplicate key made. The same applies when using coded electronic locks or combination locks, in which case the code or number can be discovered, posing a security problem.

[0005] One way to address security concerns is to use a lock with a changeable PIN code. The lock is equipped with a communication function, and the management company etc. sends an unlocking password (hereafter referred to as a one-time password) to the lock. As a result, the lock that receives the password becomes one that can be unlocked with only the one-time password. Those who wish to view the property will also be notified of the one-time password. Those who wish to view the property can enter the one-time password to unlock the property. Once the viewing is over, the management company etc. will operate the communication means to disable the one-time password for unlocking the lock.

[0006] The above-mentioned method of using one-time passwords provides high security. In addition, since real estate agents do not need to accompany the viewing, fewer personnel are required. However, the above-mentioned locks using one-time passwords have the problem that they consume a lot of power and the battery runs out quickly. That is, locks that use one-time passwords consume power not only for opening and closing the lock, but also for communication. Some electric locks are powered by commercial power, but locks that use commercial power require a lot of wiring. For this reason, battery-powered electric locks are popular, but locks that use one-time passwords as mentioned above consume power not only for opening and closing the lock, but also for communication, so the batteries wear out quickly and need to be replaced frequently, and there is also the problem that communication equipment is required in the facilities where the locks are installed, both for commercial power and batteries.

[0007] The present invention focuses on the above-mentioned problems and provides a locking / unlocking system that has high security, consumes little battery power, and does not require any equipment for telegraph communication with the lock or the place where the lock is installed. [Means for solving the problem]

[0008] An aspect for solving the above-mentioned problems is a locking / unlocking system having an unlocking code creation device that creates a two-dimensional code having information related to an input code, and a lock, wherein the input code includes time information related to the time to unlock the lock, target information identifying the target lock, and biometric authentication information, and the lock has an image acquisition means, a biometric information reading means, a two-dimensional code reading means, a time certification function, and a specific information storage means that stores specific information identifying the lock, and the locking / unlocking system is capable of unlocking the lock on the condition that a two-dimensional code is read by the two-dimensional code reading means, and the information read from the two-dimensional code includes at least target information that matches the specific information stored in the specific information storage means, and an image related to the biometric information is read by the biometric information reading means, and the information read from the image includes the biometric authentication information.

[0009] The locking / unlocking system of this embodiment is composed of an unlocking code generating device and a lock. The lock is attached to a front door or the like. On the other hand, the unlocking code generating device is installed in, for example, a management company, etc. In other words, the unlocking code generating device is located away from the lock. In the locking / unlocking system of this embodiment, a two-dimensional code for unlocking is created by an unlocking code creation device. The two-dimensional code contains information related to an input code. The input code contains time information related to the time to unlock the lock, target information for identifying the target lock, and biometric authentication information.

[0010] On the other hand, the lock has an image acquisition means, a biometric information reading means, a two-dimensional code reading means, a time authentication function, and specific information for identifying the lock. In the locking / unlocking system of this embodiment, the two-dimensional code is read by the two-dimensional code reading means of the lock. The lock employed in this embodiment is provided with a time recognition function, so that the time when the two-dimensional code was read by the two-dimensional code reading means can be known by the time recognition function. In addition, the two-dimensional code contains target information that identifies the target lock, so by reading the two-dimensional code, it is possible to determine whether the two-dimensional code corresponds to the lock that was read.

[0011] The lock stores specific information for identifying the lock in a specific information storage means. The lock then compares at least the specific information with the target information for identifying the lock read from the two-dimensional code, and upon confirmation of a match, the lock obtains an image related to biometric authentication with an image acquisition means and reads it as information related to biometric authentication with a biometric information reading means. The lock can then be unlocked on the condition that the biometric authentication information in the decoded two-dimensional code is included in the information related to biometric authentication that has been read.

[0012] In other words, the management company, etc., uses an unlock code creation device to input target information such as time information and room number, and biometric information captured from the photo of the person viewing the property, etc., to create an input code,

[0013] In addition, the lock / unlock system of this embodiment does not require communication between the lock and the unlock code creation device, so the lock does not need standby power required for communication. Therefore, the lock consumes less power and the battery is less depleted.

[0014] In the above-mentioned aspect, it is desirable that the target information is information that identifies a building and / or a room, and that the identification information is information that identifies the building and / or the room in which the lock is attached.

[0015] In each of the above aspects, the two-dimensional code may include a plurality of pieces of information related to the input code.

[0016] In each of the above-mentioned aspects, it is desirable that the unlocking code creation device has an encryption device which encrypts the input code using a specific common encryption key, the lock has a decryptor which decrypts the encrypted data read from the two-dimensional code using the specific common encryption key, and the lock has a plurality of common encryption keys pre-stored therein, and the common encryption key to be used is selected by settings or prior agreement.

[0017] That is, the matching is performed in the following procedure: (1) The management company, etc. uses an unlocking code creation device to input target information such as time information and room number, as well as biometric information captured from the viewer's photo on his or her identification card, to create an input code. (2) The management company etc. encrypts the input code using a coder and a specific common key, and creates a two-dimensional code from the encrypted data. (3) The management company etc. sends the two-dimensional code to the viewer via communication or other means. (4) The visitor imports the two-dimensional code sent by the lock using the image acquisition means of the lock, reads the two-dimensional code (encrypted input code) using the two-dimensional code reading means, and decrypts the code using the code and a common key in the lock's decoder. At this time, the common key is selected from those stored in the lock according to the settings. (5) At least the decrypted target information is compared with the specific information stored in the specific information storage unit of the lock to confirm that they match. If there is a match in (6) and (5), the viewer holds his or her face over the lock's image acquisition means, which captures the image into the lock, and the biometric information reading means reads an image of the viewer's biometric information (facial information). (7) The biometric authentication information decoded from the two-dimensional code is compared with the biometric information of the person being viewed that was read. If the probability that the person viewed is the same person as the person in the photograph (hereinafter referred to as the authentication rate) is within a set range, the door can be locked or unlocked.

[0018] In the locking / unlocking system of this embodiment, the input code is encrypted by an encoder to create a two-dimensional code, which is then compared with the biometric information of the person wishing to view the property, making it highly secure.

[0019] The locking / unlocking system of this aspect is a locking / unlocking system having an unlocking code generating device that generates a two-dimensional code, and a lock, the two-dimensional code having information related to an input code and key information consisting of biometric authentication information, the input code including time information related to the time when the lock is to be unlocked, target information for identifying the target lock, and specific secret information, the lock having an image acquisition means, a biometric information reading means, a two-dimensional code reading means, a time recognition function, a secret information storage means for storing a plurality of pieces of secret information, and specific information for identifying the lock, the two-dimensional code being read by the two-dimensional code reading means, and storing time information matching the time when the two-dimensional code was read in the information read from the two-dimensional code, and specific information being stored in the specific information storage means. A locking / unlocking system that is capable of unlocking a lock on the condition that the lock contains target information that matches stored specific information and the specific secret information is included among multiple secret information stored in a secret information storage means, wherein the unlocking code creation device has an encryption device that encrypts data using the encryption device with a key consisting of the input code and the biometric authentication information, the lock has a decryptor that decrypts data by inputting a code read from the two-dimensional code and a specific common key into the decryptor, and the common key on the lock side is the biometric information read by the biometric information reading means, and the locking / unlocking system is capable of decryption when the key information read from the two-dimensional code matches the biometric information.

[0020] In the locking / unlocking system of this embodiment, the biometric authentication information of the viewer is used as the key to create a two-dimensional code, and the biometric information of the viewer is used as the key to decode the two-dimensional code, making it possible to more accurately identify the viewer and increasing security.

[0021] In each of the above aspects, it is preferable that the biometric authentication information is a face image.

[0022] By using a facial image as biometric authentication information, the person viewing the property can be identified reliably. Furthermore, in the present invention, a face image is taken as an example, but biometric information such as a fingerprint, retina, or veins may also be used. Effect of the Invention

[0023] The locking and unlocking system of the present invention has high security and consumes little battery power, so it can be used for a long period of time. [Brief description of the drawings]

[0024] [Figure 1] 1 is a configuration diagram of a locking / unlocking system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram showing how to unlock using the locking / unlocking system of the present invention. [Diagram 3] 2 is a front view of the lock operating section of the locking / unlocking system of FIG. 1. [Figure 4] FIG. 2 is a block diagram of a lock control device of the locking / unlocking system of FIG. [Diagram 5] 2 is a block diagram of a two-dimensional code processing unit of the locking / unlocking system of FIG. 1. [Figure 6] 2 is a block diagram of a two-dimensional code reading means of the locking / unlocking system of FIG. 1. [Figure 7] FIG. 2 is a block diagram of a decryption means of the locking / unlocking system of FIG. [Figure 8] 2 is a block diagram of an image processing unit of the locking / unlocking system of FIG. 1. [Figure 9] 2 is a block diagram of an unlocking code generating device of the locking / unlocking system of FIG. 1. [Figure 10] 2 is a block diagram of a two-dimensional code creation unit of the locking / unlocking system of FIG. 1. [Figure 11] 13 is an example of a display screen of an unlocking code generating device. [Figure 12] 11 is a diagram showing a procedure for encrypting an input code to create a two-dimensional code. [Figure 13] 13 is a flowchart showing how decrypted data is compared with lock possession data to unlock the lock. [Figure 14] 13A shows input code information included in a two-dimensional code, and FIG. 13B shows an example of three sets of input code information included in a two-dimensional code in a modified example of this embodiment. [Figure 15] 2 is a block diagram of an unlocking code generating device for the locking / unlocking system of FIG. 1 in the case where face photograph information is used as a common key. [Figure 16] 2 is a block diagram of a lock control device of the locking / unlocking system of FIG. 1 in the case where face photograph information is used as a common key. FIG. [Figure 17] 2 is a block diagram of the decryption means of the locking / unlocking system of FIG. 1 when face photo information is used as a common key. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Hereinafter, an embodiment of the present invention will be described. 1, a locking / unlocking system 1 of this embodiment is composed of a lock 2 and an unlocking code generating device 3. In addition, a portable terminal 5 such as a mobile phone is included as an auxiliary member. The lock 2 is a so-called electric lock, and has an internal drive source (not shown) that extends and retracts the deadbolt 160. The drive source is a motor or a solenoid, and is driven by a built-in battery (not shown). A handle 121 is attached to the lock 2, and by operating the handle 121, the latch 122 can be moved backward.

[0026] In an embodiment of the present invention, as shown in Fig. 2, a facial photo printed on an identification card 7 of a person wishing to view a house is captured by a scanner or the like into an unlocking code creation device 3. A two-dimensional code containing the captured image data is created, and the created two-dimensional code is sent by email or the like to a mobile terminal 5 of the person wishing to view a house. The two-dimensional code is stored in the mobile terminal 5. The person wishing to view a house goes to the house or the like they wish to view, and holds the mobile terminal 5 and their own face 9 over a lock 2 equipped with a built-in camera installed on the front door of the house, and the lock 2 reads the two-dimensional code and facial image data, and if it meets certain conditions, the lock is unlocked.

[0027] The lock 2 also has an operating portion 10 as shown in FIG. The operation unit 10 has at least an image acquisition unit 71 , a code reader 8 , a biometric information reading unit 140 , and a display unit 12 . The code reader 8 is a device that has an image acquisition means 71 that acquires a known two-dimensional code as an image, and reads the two-dimensional code. Biometric information (hereinafter, referred to as a face image) data is also acquired by the image acquisition means 71. The acquired face image data is used by a biometric information reading means 140 to determine a face area from within the image, then detect face feature points to obtain the positions of feature points such as the eyes, nose, and mouth corners, and then normalize the position and size of the face area using the feature point positions and convert them into numerical values. The display unit 12 is a known liquid crystal panel or organic EL panel, and is capable of displaying characters, symbols, and the like.

[0028] The lock 2 of this embodiment has an image acquisition means 71 and a code reader 8, and when a person who wishes to view the room enters the room, the lock 2 acquires an image of a two-dimensional code using the image acquisition means 71 or the like, and also acquires an image of the person's face. The lock 2 reads the data contained in the image of the two-dimensional code using the code reader 8. The read data is converted back into numerical data by a decoder. The lock 2 compares the target information that identifies the lock 2 with the specific information that the lock 2 possesses, and confirms that they match. In addition, the facial image acquired at the same time as the two-dimensional code is also read as numerical data. If the facial authentication information contained in the read two-dimensional data is the same as the image data of the face, a drive source (not shown) operates, and the deadbolt 160 retracts and becomes unlocked. Here, the image acquisition means 71 can be a built-in camera included in the lock 2, or the like.

[0029] In other words, the agent or the like imports the facial photograph written on the candidate's identification card 7 or the like into the unlocking code creation device 3 as image data. The image data is digitized and converted into a two-dimensional code by the biometric information reading means 140 as described above. At the lock 2 side, this two-dimensional code is digitized by a decoder. In addition, the biometric information reading means 140 determines the facial area from within the image of the candidate's face imported into the image acquisition means 71, then detects facial feature points to obtain the positions of feature points such as the eyes, nose, and mouth corners, and then normalizes the position and size of the facial area using the feature point positions and converts it into a numerical value. The numeric data decoded by the decoder on the lock side is compared with the numeric data of the viewer's face that is captured by the image acquisition means 71 and digitized by the biometric information reading means 140, and if they are the same or the authentication rate is within a preset range, the lock is unlocked. This authentication rate is set to be approximately 80% to 100%.

[0030] When the person leaves the room, an image of the person's face is captured by the image capture means 71 or the like and digitized in the same way as when the person entered. The code reader 8 reads the data contained in the image of the two-dimensional code on the mobile terminal 5. The read data is converted into numeric data by a decoder. The numeric data converted by the decoder is compared with the specific information of the lock 2 and the numeric data of the person's face, and if the specific information of the lock 2 and the data of the person's face are contained in the numeric data, a drive source (not shown) is operated to protrude the deadbolt 160 and enter a locked state. Alternatively, the door can be set to lock automatically a certain amount of time after unlocking.

[0031] The operation unit 10 may include only the image acquisition means 71, the code reader 8, and the biometric information reading means 140.

[0032] A control device (hereinafter referred to as the lock control device) 20 as shown in Fig. 4 is built into the operation unit 10. The lock control device 20 has a known CPU and memory. The memory stores programs that realize the following functions. As shown in FIG. 4, the lock side control device 20 has a two-dimensional code processing unit 21, an image processing unit 82, a calendar function unit (time certification function unit) 22, a specific information storage unit 27, a biometric information storage unit 25, and a matching means 28.

[0033] The two-dimensional code processing unit 21 is composed of two-dimensional code reading means 34 as shown in Fig. 5. The two-dimensional code reading means 34 is composed of a code reader 8 and two-dimensional code reading means 31 as shown in Fig. 6. The two-dimensional code reading means 31 analyzes the two-dimensional code read by the code reader 8 and converts it into a bit string. 7, the decryption means 32 is composed of a decryptor 33 and a common key storage unit 36. Note that in this embodiment, the decryption means 32 is provided with a plurality of common keys 35. That is, in this embodiment, common keys 35a to 36k are stored in the common key storage unit 36.

[0034] 8, the image processing unit 82 is composed of an image acquisition means 71 and a biometric information reading means 140. An image of the face of the preview visitor is acquired by the image acquisition means 71, and is converted into numerical data by the biometric information reading means 140.

[0035] The calendar function unit 22 can obtain information related to not only the date but also the time.

[0036] The specific information storage unit 27 stores specific information for identifying the lock 2. The specific information is, for example, an identification number of the lock. In this embodiment, the specific information for identifying the lock 2 is information for identifying the building and room in which the lock 2 is attached, for example, information such as building 10, room 12.

[0037] The collation means 28 compares the information written in the two-dimensional code, the numerical data obtained from the viewer's face, and the specific information stored in the specific information storage unit 27.

[0038] The lock side control device 20 also has a switching means 37. The switching means 37 switches between a preview mode and a normal use mode. The switching means 37 used in this embodiment is a DIP switch, but the preview mode and normal use mode may also be switched by operating a numeric keypad or the like.

[0039] Next, a description will be given of the unlocking code creation device 3. The unlocking code creation device 3 is a known personal computer, and has a CPU and a memory. The unlocking code creation device 3 has a keyboard (input means) 55 and a display screen 56.

[0040] The unlocking code generating device 3 has a function of generating a two-dimensional code having information related to an input code for unlocking the lock 2, and transmitting the code to the mobile terminal. The unlock code generating device 3 includes at least a data temporary storage unit 40, a two-dimensional code generating unit 42, a biometric authentication information reading means 141, a biometric authentication information storage unit 43, and a communication unit 45 as shown in FIG. The temporary data storage unit 40 is a memory that temporarily stores the input code. The biometric information reading means 140 creates a two-dimensional code including information related to the face photo printed on the identification card of the person viewing the property, and the communication unit 45 transmits the code to the mobile terminal.

[0041] The biometric information reading means 140 determines a face area from within the image, then detects facial feature points to determine the positions of the feature points such as the eyes, nose, and corners of the mouth, and then normalizes and quantifies the position and size of the face area using the feature point positions.

[0042] The two-dimensional code creation unit 42 is composed of a two-dimensional code creation means 51 as shown in FIG.

[0043] The encryption means 50 encrypts the input code stored in the data temporary storage unit 40, and is composed of an encryption device 60 and a common key 35. The unlocking code creation device 3 may have one or more common keys 35 (for example, a common key for preview mode and a common key for normal use mode). The two-dimensional code generating unit 42 converts information related to the input code into a two-dimensional code.

[0044] The necessary information is inputted into the unlocking code creation device 3 of this embodiment, input data is created, the input data is encrypted, and the input encrypted data is converted into a two-dimensional code. In the unlocking code creation device 3 of this embodiment, by performing a predetermined operation, an input screen as shown in Fig. 11 is displayed on the display screen 56. The worker operates the keyboard (input means) 55 to input data and fill in the blanks in the table. The input screen is broadly composed of a time information input field 120, a target information field 41 for identifying the target lock, a management code field 53 for inputting a management code, etc., an image input field (for inputting a photograph of an ID card, etc.) 145, and a field for clicking “issue two-dimensional code 52” after completing the input.

[0045] The time information input field 120 has fields for "year," "month," "day," and "time." For example, if a person wishing to view the property wishes to do so from noon on May 5, 2023, they would enter "2023" in the year column, "5" in the month column, and "5" in the day column. In the time column, they would enter "12." In many cases, a time earlier than that is entered in the time column to allow for some leeway. It is also possible to enter a time period.

[0046] The target information section 41 has a section for "room number." For example, if you want to see room 12, enter "12." The target information field 41 is a field for inputting target information for identifying the target lock 2, and may be configured to input the identification number of the lock 2.

[0047] The management code column 53 is not normally used, but is used when the common key is changed depending on the purpose. The management code column 53 may be hidden.

[0048] The information entered on the input screen becomes the source of the input code. The input code includes timing information relating to the time when the lock is to be unlocked, target information identifying the target lock, and information regarding a facial photograph of the person viewing the property. That is, the input code contains the information "year," "month," "day," and "time" entered in the time information input field 120 as time information. The input code also contains the information "room number" as target information for identifying the target lock. Furthermore, information obtained from a facial photograph on the applicant's identification card or the like is entered in the image input field 145 and is included in the input code.

[0049] By entering the required information into the input screen and performing the required operation (clicking on issue two-dimensional code 52), the input code is encrypted (becoming an input encryption code) and a two-dimensional code containing related information is created. That is, as shown in Fig. 12, the input code stored in the data temporary storage unit 40 is sent to the encryption means 50, where it is encrypted by the encryption device 60 and the common key 35. Any known encryption mode may be used for the encryption. The input encryption code is then sent to the two-dimensional code creation unit 42, where a two-dimensional code is created. The two-dimensional code is printed by a printer (not shown) as necessary, and is also transmitted from the communication unit 45 to the mobile terminal 5 as necessary and is displayed on the display screen of the mobile terminal.

[0050] Next, a method of using the locking / unlocking system 1 will be described. As described above, the locking / unlocking system 1 of this embodiment is a system designed to be used by those who wish to view the property. When a viewing is expected, the switching means 37 of the lock 2 is switched to the viewing mode. The preview mode is an operation mode in which unlocking is performed using a two-dimensional code created by the unlocking code creation device 3.

[0051] Those who wish to view the property apply for a viewing to a real estate agent or building manager (hereafter referred to as the agent). The agent will ask the person wishing to view the property for the following information: (1) Properties to be viewed For example, if the property is an apartment building, confirm the apartment name and room number. If it is a detached house, confirm the address, etc. (2) Preferred viewing date Confirm the date and time you would like to view the property.

[0052] The agent operates the unlocking code creation device 3 to display the input screen, enters the necessary items into the input screen based on the information provided by the person wishing to view the property, and creates an input code. At this time, the face photo of the person appearing on the person's identification card or a face photo obtained from the person is imported into the unlocking code creation device 3 by scanning or other methods. As mentioned above, the input code contains time information, target information, and biometric information of the person viewing the property (hereinafter referred to as face information).

[0053] The created two-dimensional code is sent to the mobile device of those who wish to view the property, and at the same time, they are informed of precautions to take when locking the door. That is, in the lock 2 of this embodiment, when the locking is completed after the viewing, a locking confirmation code is displayed on the display unit 12. When the locking is completed, a notice is given to inform the agent of the locking confirmation code as a precaution when locking. The agent asks the visitor for the locking confirmation code, and if it is the expected value, knows that the property has been definitely locked.

[0054] A person who wishes to view the property goes to the property to be viewed, displays a two-dimensional code on his / her mobile terminal 5, has it read by a code reader 8 of the lock 2, and brings his / her face close to the lock 2, and an image of the face is captured by an image capture means 71 into the lock 2. 13, the lock control device 20 of lock 2 decodes the two-dimensional code and compares the time information, target information, and biometric authentication information contained in the two-dimensional code with information held by lock 2. That is, it compares the time information, target information, and biometric authentication information contained in the two-dimensional code with the information of the calendar function unit 22 of lock 2, the identification information of lock 2, and face information. The identification information of the lock 2 is information for identifying the lock 2 stored in the identification information storage unit 27. The facial information of the lock 2 is numerical data obtained by capturing the face of the visitor by the image acquisition means 71, and is stored in the biometric information storage unit 25.

[0055] That is, the figure read by the code reader 8 is analyzed and converted into a bit string by two-dimensional code reading means 31. The data is then decoded by decoding means 32. More specifically, the data is input to a decoder 33 and decoded by a common key 35. The data is then sent to the collation means 28 and compared with the information held by the lock 2. Specifically, the information on the facial photograph contained in the two-dimensional code is compared with the facial information of the candidate stored in the biometric information storage unit 25. In other words, if the target information and information on the facial photograph contained in the two-dimensional code match the specific information and facial information of the candidate contained in the biometric information storage unit 25 of lock 2, lock 2 can be unlocked. If they do not match, an error message is displayed.

[0056] The locking / unlocking system 1 described above does not require communication between the lock 2 and the unlocking code creation device 3. The lock 2 does not require standby power required for communication. Therefore, the lock 2 consumes little power and consumes little battery power. In addition, the probability that the photograph of the person's face matches the information of the person's actual face is extremely high. Therefore, the locking and unlocking system 1 of this embodiment is highly safe. Furthermore, no equipment is required for telecommunication with the lock or the place where the lock is installed.

[0057] In the above-described embodiment, the two-dimensional code contains information related to a set of input codes. That is, in the above-described embodiment, the set of input codes is made up of timing information related to the time to unlock the lock, target information for identifying the target lock, and biometric information. In the above embodiment, the input code information is included in the two-dimensional code 100 as shown in FIG. In contrast to this, the two-dimensional code 101 employed in the modified example includes three sets of input code information as shown in FIG. 14(b). This two-dimensional code 101 is useful, for example, when one wishes to view multiple properties on the same day.

[0058] Once the viewing is complete and the rental or sales contract is completed, the operating mode switches to normal use mode.

[0059] Next, the normal use mode will be described. In the normal use mode, the resident's mobile terminal 5 is used as a mobile unlocking code creation device, and the mobile terminal 5 creates a two-dimensional code. That is, the portable terminal 5 is made into a portable unlocking code generating device by installing special software in the portable terminal 5. Hereinafter, the portable terminal 5 is referred to as a portable unlocking code generating device 130.

[0060] The resident uses the biometric authentication information reading means 141 of the mobile terminal 5 to digitize image data from a facial photograph on the identification card 7 or the like, and converts it into a two-dimensional code. The two-dimensional code is stored in the mobile terminal 5. When unlocking, the mobile terminal 5 is held over the lock 2, and the lock 2 reads the two-dimensional code using the image acquisition means 71 and code reader 8, encrypts it, and converts it into numerical data using a decoder. At the same time, the resident also holds his face over the lock 2, and the image acquisition means 71 and biometric information reading means 140 digitize the facial information. The numerical data read from the two-dimensional data is then compared with the digitized facial information of the resident, and the door will be unlocked if the authentication rate is within the set range.

[0061] When locking the door, the resident also holds the mobile terminal 5 and their face over the lock 2, and the code reader 8 reads the data contained in the image of the two-dimensional code on the mobile terminal 5. The read data is converted into numeric data by the decoder 33. An image of the resident's face is also acquired by the image acquisition means 71 or the like, and digitized in the same way as when entering the room. The numeric data converted by this decoder is compared with the numeric data of the resident's face, and if they match, a drive source (not shown) is activated, causing the deadbolt 160 to protrude and enter the locked state.

[0062] Here, the information written as the two-dimensional data may be only the facial photograph information of the person viewing the property or the resident, and the person viewing the property or the resident may store only their own facial information in lock 2. The facial photograph information read from the two-dimensional code is compared with the facial information of the person stored in lock 2, and if they match, the lock can be opened or closed.

[0063] Next, a case where the face photo information is used as a common key will be described. In the embodiment described above, face photo information is included in the two-dimensional code, and the face information of the person viewing the code is compared with the face photo information to unlock the code, but when face photo information is used as a common key, the face photo information is included in the common key, information obtained from the face photo is used as the common key to encrypt predetermined data, and the face information of the person viewing the code is written as the common key to decrypt the two-dimensional data, and the face information is not used when comparing the two-dimensional data.

[0064] The unlocking code generating device 131 has a function of generating a two-dimensional code having information related to an input code and transmitting the code to the mobile terminal. As shown in FIG. 15, the unlocking code creation device 131 includes a temporary data storage unit 40, a two-dimensional code creation unit 42, a secret information candidate memory unit 44, an encryption means 50, a biometric information reading means 140, a communication unit 45, and a common key memory unit 87.

[0065] The agent scans the face photograph on the identification card of the person viewing the property or a face photograph obtained from the person himself / herself, converts it into a 128-bit numeric string in the unlocking code creation device 131, and stores it in the common key storage unit 87. Then, the unlocking code creation device 131 inputs the desired viewing date in the date input field as an input code, and the room number for identifying lock 2 as target information.

[0066] A specific cipher is automatically input into the random number field (candidate cipher field) 53. The specific cipher is a random number, and is one of the cipher candidates stored in the private information candidate storage unit 44.

[0067] The information entered on the input screen will become the input code. The input code includes timing information relating to the time when the lock is to be unlocked, target information for identifying the target lock, and a specific code. That is, the input code contains the information on "year," "month," "day," and "time" as time information entered in the time information input field 120. The input code also contains information on "room number" as target information for identifying the target lock.

[0068] By inputting predetermined items into the input screen and performing a predetermined operation, a two-dimensional code having information related to the input code is created. That is, as shown in Fig. 12, the data stored in the data temporary storage unit 40 is sent to the encryption means, where it is encrypted by the encryption device 60 and the common key 35. The 128-bit numeric string stored in the common key storage unit 87 is written into the common key 35. The encrypted data is then sent to the two-dimensional code creation unit 42, where a two-dimensional code is created. At this time, the two-dimensional code includes an encryption of the key information consisting of the image of the face photograph information. The two-dimensional code is printed by a printer (not shown) as necessary, and is also transmitted from the communication unit 45 to the mobile terminal 5 as necessary, and is displayed on the display screen of the mobile terminal 5.

[0069] As shown in Figure 16, the lock side control device 80 has a two-dimensional code processing unit 21, an image processing unit 82, a calendar function unit (time certification function unit) 22, a time information memory unit 29, a lock side common key memory unit 97, a lock side secret information memory unit 102, a specific information memory unit 105, and a matching means 28.

[0070] The created two-dimensional code is sent to the mobile terminal 5 of the person who wishes to view the property. At this time, the person who wishes to view the property also receives notice of precautions to take when locking the property. The person who wishes to view the property goes to the property he or she wishes to view, displays the two-dimensional code on his or her mobile terminal 5, and uses the image acquisition means 71 of the lock 2 and the two-dimensional code reading means 34 to read the two-dimensional code. The preview visitor also has his / her facial information acquired by the lock 2 using the image acquisition means 71 of the lock 2. The lock 2 then converts the facial information into a 128-bit numeric string using the biometric information reading means 140, and stores this in the lock-side common key storage unit 97 as key information.

[0071] 17, the decryption means 92 of the lock 2 is composed of a decryptor 33 and a lock-side common key storage unit 97. In this embodiment, the lock-side common key storage unit 97 stores the lock-side common key 38. The lock-side common key 38 is entered by the person viewing the lock 2 with their face held up to the lock, and the image of the person's face is captured by the image capture means 71 of the lock 2, and converted into numerical data by the lock-side biometric information readout means 151. The numerical data is then stored in the lock-side common key storage unit 97.

[0072] Next, the two-dimensional code read by lock 2 is converted into a bit string and encrypted. At this point, the 128-bit numeric string is used as a key to decrypt the code. If the numeric string of the key information representing the facial photo information in the bit string matches the 128-bit numeric string that is the key information indicating the facial information, the two-dimensional code is decrypted. If the key information representing the facial photo information and the key information indicating the facial information are different, the person viewing the code is determined to be a different person from the person applying for a preview, and the code will not be decrypted.

[0073] The collation means 28 compares the information written in the two-dimensional code with the time information, the target information, and the specific secret information stored in the lock 2.

[0074] That is, the decrypted data is collated by the collation means 28 with the time information, the target information, and the specific secret information stored in the lock 2. If the time information, the target information, and the specific secret information of the decrypted data match, the lock is unlocked.

[0075] In the normal use mode, a common key is similarly created from the digitized facial photograph information stored in the common key memory unit 36, and a two-dimensional code is created using the encryptor 61 and the common key 35. At the entrance to the residence, the two-dimensional code and the resident's own face are held up to lock 2, and if the digitized facial data matches the numerical data of the facial photograph read from the two-dimensional code, the resident's own facial data becomes the common key, the two-dimensional data is decrypted, and if certain conditions are met, the lock can be opened.

[0076] In this example, the face was used as biometric information, but fingerprints and other biometric information can also be registered on the unlock code creation device and can be authenticated by the lock in the same way.

[0077] The locking / unlocking system 1 described above does not require communication between the lock 2 and the unlocking code creation device, and the lock 2 does not require standby power required for communication. Therefore, the lock 2 consumes little power and does not consume batteries. In addition, there is no need for equipment for telegraph communication with the lock or the place where the lock is installed. [Explanation of symbols]

[0078] 1 Locking and unlocking system 2 tablets 3. Unlocking code generator 8 Code Reader 10 Control section 11. Means of inputting cipher code 12 Display means 20 Lock side control device 21 Two-dimensional code processing unit 22 Calendar function section 25 Biometric information storage unit 27 Specific information storage unit 28 Matching methods 29 Timing information storage section 31 Two-dimensional code reading means 32 Decryption Method 33 Decoder 35 Common key 36 Common key storage 37 Switching means 38 Lock side common key 40 Temporary Data Storage Unit 42 2D Code Creation Department 43 Biometric authentication information storage unit 44 Secret information candidate storage section 50 Encryption methods 51 Two-dimensional code creation means 71 Image Acquisition Method 82 Image Processing Section 87 Common key storage 92 Decryption Method 97 Lock side common key memory section 140 Biometric information reading means 141 Biometric information reading means

Claims

1. A locking / unlocking system having an unlocking code generating device that generates a two-dimensional code having information related to an input code, and a lock, The input code includes time information related to the time when the lock is to be unlocked, target information for identifying the target lock, and biometric authentication information; The lock has an image acquisition means, a biometric information reading means, a two-dimensional code reading means, a time certification function, a specific information storage means for storing specific information for identifying the lock, and a biometric information storage means, The two-dimensional code is read by the two-dimensional code reading means, and the information read from the two-dimensional code includes target information that matches at least the specific information stored in the specific information storage means; The locking / unlocking system is characterized in that an image related to biometric information is read by the biometric information reading means, and the lock can be unlocked on the condition that the biometric authentication information is included in the information read from the image.

2. The locking / unlocking system according to claim 1, characterized in that the target information is information that identifies a building and / or a room, and the identification information is information that identifies the building and / or the room in which the lock is installed.

3. The unlocking code generating device has an encryption device, and encrypts the input code in the encryption device using a specific common key; The lock has a decoder, and inputs the code read from the two-dimensional code and a specific common key to the decoder to decode the data, 2. The locking / unlocking system according to claim 1, wherein a plurality of common keys are pre-stored in the lock, and the common key to be used is selected by settings.

4. The locking / unlocking system according to claim 1 , wherein the biometric authentication information is face image information.

5. A locking / unlocking system having an unlocking code generating device that generates a two-dimensional code and a lock, The two-dimensional code has information regarding an input code and key information consisting of biometric authentication information, The input code includes time information related to the time when the lock is to be unlocked, target information for identifying the target lock, and specific secret information, The lock has an image acquisition means, a biometric information reading means, a two-dimensional code reading means, a time certification function and a time information storage means for storing the time certification function, a secret information storage means for storing a plurality of pieces of secret information, and a specific information storage means for storing specific information for identifying the lock, A locking / unlocking system that is capable of unlocking a door under the condition that a two-dimensional code is read by the two-dimensional code reading means, the information read from the two-dimensional code includes time information that matches the time when the code was read and target information that matches specific information stored in a specific information storage means, and the specific secret information read from the two-dimensional code is included in a plurality of pieces of secret information stored in a secret information storage means, the unlocking code generating device has an encryption device, and encrypts data using a key consisting of the input code and the biometric authentication information in the encryption device; The lock has a decoder, and inputs the code read from the two-dimensional code and a specific common key to the decoder to decode the data, A locking / unlocking system characterized in that the common key on the lock side is biometric information read by the biometric information reading means, and the decryption can be achieved when the key information read from the two-dimensional code matches the biometric information.

6. The locking / unlocking system according to claim 5, characterized in that the target information is information that identifies a building and / or a room, and the identification information is information that identifies the building and / or the room in which the lock is installed.

7. The locking / unlocking system according to claim 5 or 6, wherein the biometric authentication information and the biometric information are face image information.

Images