Method and system for visitor control in an access area within an amusement park

Abstract

A method for controlling visitors (V) in an access area (7) within a leisure park, for example a ski resort or an amusement park, comprising: Transmitting (100) Bluetooth signals towards the access area with several beacons (30) mounted on a common gantry (3), the relative position of the beacons being known; Filming (105) with a first camera (31) said access area, so as to generate a still or moving image (8) of the access area seen from above; Identifying (122) at least one visitor in said image; Receiving (126) in a server (5) the position of a mobile device, for example a smartphone or a smartwatch, determined by this mobile device using said Bluetooth signals; Checking (130) whether a position received from a mobile device corresponds to the position of said identified visitor; Checking (132) the right of access of said identified visitor. Figure to be published with the abbreviation: Figure 1

Description

Title of the invention: Method and system for controlling visitors in an access zone inside a leisure park Technical field

[0001] The present invention relates to the problem of controlling visitors in leisure parks, in particular ski resorts or amusement parks. State of the art

[0002] Many ski resorts and amusement parks use RFID elements, for example transponders integrated into a smart card or a watch, for access control and payment of access. Users who wish to ski must purchase an RFID element and load it with a monetary amount to gain access to the facilities. Payment is most often made in advance, by pre-loading the card with a prepaid amount that is debited according to time (for example hourly or daily), or by controlling each access to the facilities by means of an RFID reader near each access gate.

[0003] These systems operate reliably and economically. Conventional RFID readers, however, have a very short range, typically of the order of a few centimeters or a few meters. They therefore only allow users to be detected in the immediate vicinity of the access control terminals, but not to be located when they are far from the installations. They also require complex logistics for the distribution and revocation of RFID elements.

[0004] EP3477602A1 describes a method and device for access and payment control in a leisure park, implementing a dedicated device. This solution allows for precise location of users throughout the park, but makes the management of user identification devices even more complex and costly.

[0005] US2017 / 270734 describes a queue control system for amusement parks which comprises at least one portable device and a control system. The portable device is provided with an identifier allowing not only access to a given attraction by NFC communication of this identifier to an NFC station, but also detection of its position in a virtual queue to access one of the attractions of the park. This position is then communicated to the different units of the system by means of medium and / or long-range communication.

[0006] GB2469026 describes a system that can be used for example in an airport for tracking a passenger's position using near field communications (RFID tag), telecommunications (DECT), femtocell, Wi-Fi etc., providing specific information about the passenger's movements and guiding the passenger Check-in at the aircraft departure or arrival. The system can also be used in a hospital, multi-activity exhibition, conference or concert, and provide information to a waiting person.

[0007] US2015 / 091726 relates to a system for providing location-dependent services, especially in an amusement park.

[0008] US2014257889 describes a mobile device location system allowing to optimize queue times based on customer flows. It implements wireless detection devices for mobile devices, for example phones equipped with a Bluetooth or Wi-Fi interface.

[0009] Payment and access control systems for leisure park facilities are also known that use visitors' smartphones for both payment and visitor access control. These devices frequently use a very short-range wireless interface, for example an NFC (Near Field Communication) interface. The visitor must therefore take their smartphone out of their pocket and press it against an NFC reader near the access control gate to allow the gate to open. It is therefore necessary to take the gate out of their pocket, or even to handle it, which may be impractical in a ski resort or with gloves, for example. Brief summary of the invention

[0010] An object of the present invention is to provide a method for controlling visitors in an access zone which is free from the limitations of the above methods.

[0011] Another object of the invention is a method for controlling visitors in an access zone which uses personal devices of the visitors, for example mobile equipment, but does not require manipulation in the access zone.

[0012] According to the invention, these aims are achieved in particular by means of a method for controlling visitors in an access zone inside a leisure park, for example a ski area or an amusement park, comprising: Emit Bluetooth signals towards the access area with several beacons mounted on a common gantry, the relative position of the beacons being known; Filming said access area using a first camera looking downwards, so as to generate a still or animated image of the access area seen from above; Highlight at least one visitor in said image; Obtaining from a server a position of at least one mobile device, for example a smartphone or a smartwatch, determined using said Bluetooth signals; Check whether a said position of a said mobile device corresponds to a position of said singled visitor; Check the access rights of said individual visitor.

[0013] The method thus makes it possible to verify the access rights of one or more visitors. visible on the image of an access zone. It is then possible to use this information, for example, to detect visitors without access rights, and / or to authorize access to visitors with such access rights.

[0014] This process does not require visitors to use dedicated equipment, but only mobile equipment such as a smartphone or a smartwatch, which the majority are equipped with anyway.

[0015] A specific software application (“app”) may be loaded into the mobile equipment in order to determine its position based on the Bluetooth signals received from the various beacons.

[0016] The method may comprise a step of determining at least one unauthorized visitor whose position determined with said image does not correspond to a received position, or at least one unauthorized visitor who does not have access rights to the controlled access zone.

[0017] A visitor is considered unauthorized if he is in the access zone but, for example: he has no mobile equipment, or his mobile equipment is stopped; he has not installed or started the dedicated software application; he has not started the required Bluetooth services in his mobile equipment; he cannot prove that he has valid access rights to the controlled area.

[0018] It is thus possible to automatically determine the presence of such an unauthorized visitor in the access zone, and to act appropriately.

[0019] The reaction to the presence of an unauthorized visitor may include capturing an image of this unauthorized visitor using an additional camera. This image may be displayed on the terminal of a supervisor who may, for example, intercept the unauthorized visitor and prohibit him from accessing the controlled area, or sell him access.

[0020] The method may include marking a portion of an image comprising said unauthorized visitor. This allows the supervisor to easily determine which visitor, among a group of visitors or in a queue, is unauthorized.

[0021] The position of mobile devices can be determined by each mobile device and sent to a server. This makes it possible to distribute computing power and simultaneously locate a large number of users present simultaneously near the gantry.

[0022] Each mobile device can determine its position using the Bluetooth AOD (Angle of Departure) method using Bluetooth signals emitted by said beacons.

[0023] The beacons may consist of antennas emitting a Bluetooth Low Energy signal.

[0024] The beacons can be distributed into several groups or anchors on said gantry. Beacons are closer to at least one antenna in the same group than to the closest antenna in another group.

[0025] Each group of tags may comprise several tags arranged in a matrix. Each matrix may comprise at least N=1 row and M>1 column. The different tags of a group may be mounted on the same conductive plate, for example a PCB card.

[0026] All beacons within each group can be linked to a common Bluetooth transmitter.

[0027] All beacons can be connected to a common Bluetooth transmitter.

[0028] The beacons within each group can transmit in turn.

[0029] The beacons can transmit successively in several different Bluetooth channels. This makes it possible to minimize the influence of noise caused, for example, by reflections of Bluetooth signals.

[0030] The tags are preferably mounted on the same substrate, for example the same printed circuit board. This ensures precise relative positioning of the tags in the factory.

[0031] The substrate can then be mounted on the gantry.

[0032] The gantry may be placed above the access area, so that visitors must pass under the gantry to access the controlled area.

[0033] The Bluetooth signals emitted by said beacons are preferably generated by the same transmitter.

[0034] The first camera is preferably a distance measuring camera. This makes it easier to single out different visitors in an image, by differentiating the different planes. This also makes it possible to determine the position of each visitor in two dimensions and to have information on their size.

[0035] The first camera is advantageously mounted on the gantry. This ensures precise and stable relative positioning between the beacons and the first camera. This positioning facilitates the correspondence between the positions of the visitors identified in the image and the positions determined by the mobile equipment.

[0036] The invention also relates to a system for controlling visitors in an access zone inside a leisure park, for example a ski area or an amusement park, comprising: A portico; Beacons mounted on the gantry; A transmitter connected to said beacons so that these beacons emit Bluetooth signals towards the access zone; A first camera looking downwards to film the access area, so as to generate a still or animated image of the access area seen from above; A software module to single out at least one visitor in said image; A software module for receiving the position of a mobile device, for example a smartphone or a smartwatch, determined by this mobile device; A software module for checking whether a position received from mobile equipment corresponds to the position of a single visitor; A software module to verify the access rights of said individual visitor.

[0037] The system may include an additional camera to capture a frontal image of unauthorized visitors in the access area. Brief description of the figures

[0038] Examples of implementation of the invention are indicated in the description illustrated by the appended figures in which:

[0039] [Fig-1] illustrates a schematic view of an exemplary system for the implementation of the invention.

[0040] [Fig.2] illustrates an image of an access area seen from above.

[0041] [Fig.3] illustrates an image of an access area seen from the front.

[0042] [Fig.4] illustrates an example of a flow diagram of a method according to the invention. Example(s) of embodiment of the invention

[0043] An example of a system according to the present invention is illustrated schematically in [Fig.l]. It is intended to control the access rights of visitors Vi in a leisure park, for example a ski area or an amusement park. The system can be used to control the main access to the leisure park, for example in order to only allow entry to visitors who have acquired a valid entry ticket, or to control access to attractions or ski lifts once the visitors are inside this leisure park, for example in order to charge for these accesses, to count the number of visitors, to manage the flow of visitors, etc.

[0044] In this example, the system is deployed at a ski resort such as an amusement park to control access of visitors, such as skiers, to a ski lift at that resort. Other amusement parks, including amusement parks, holiday clubs, outdoor festivals, etc., may implement the system.

[0045] The leisure park comprises several facilities, here ski lifts. Access by visitors V; to each facility is controlled by a gate 3 above the access area 7, and / or a terminal next to this access area. Access control may involve controlling the opening of a gate, for example a turnstile or a door, giving access to the facility. In a preferred embodiment, at least some facilities can be accessed without going through a gate. Access control then aims to control which visitor has accessed which facility at which moment, and / or to transmit an indication when a visitor without access rights is near the controlled access area. In this case, the access control terminal can, for example, be used to detect and identify unauthorized visitors who are, for example, in a queue.

[0046] Visitors V; must be equipped with mobile equipment 2, for example a smartphone, a smartwatch, etc., in order to prove their right of access. Additional access control means, for example an RFID card reader, may be provided to control visitors without such mobile equipment or when the battery of their equipment is discharged. A software application (“app”) dedicated to access control must be installed in the mobile equipment 2, and executed at the time of access control.

[0047] The gantry 3 is equipped with several beacons 30 which emit Bluetooth signals. Optionally, at least some of the beacons can be mounted on a terminal at the height of the participants. The position of the different beacons is known. In one embodiment, the beacons are spaced apart by a distance less than or equal to 1 / 2, for example a distance equal to 1 / 3, 1 being the wavelength of the Bluetooth signal (approximately 12.5 cm at 2.4 GHz). This arrangement allows a high resolution of the precision measurement with a given number of beacons. The desired high resolution is also obtained thanks to a judicious arrangement of the beacons, for example a line, matrix or circle arrangement, and thanks to a sufficient number of beacons.

[0048] The tags 30 are advantageously mounted on a single printed circuit board, fixed to the gantry, which makes it possible to guarantee the precise positioning of the tags in the factory. It is also possible to provide several printed circuit boards with several tags 30 on each board. Each printed circuit board, called an anchor, carries a group of tags 30.

[0049] The signal emitted by the different beacons 30 is generated by a single common electronic transmitter, for example a Bluetooth Low Energy 5.1 radio or higher. The use of a single transmitter makes it possible to guarantee a phase shift which depends only on the position of the different beacons. The transmitter can be connected to the different beacons by analog switches open alternately, so that the different beacons transmit in turn. To carry out the positioning at a time "t", a single Bluetooth message can be used, which can be divided into different parts (as many as there are beacons) which are each sent by a beacon.

[0050] The position of each mobile device 2 can be determined by this mobile device and sent to the server 5. This makes it possible to distribute the computing power necessary for this location, and thus to simultaneously locate a large number of users present simultaneously near the gantry.

[0051] For this purpose, the starting angle of the Bluetooth signals emitted by the different beacons 30 is advantageously determined by each mobile equipment 2 which receives them, and used by this mobile equipment to determine its position by triangulation.

[0052] It is also possible to use the angle of arrival of the signals received by the mobile devices to determine their position. It is also possible to calculate the position of the mobile devices 2 in the server, or in the cloud.

[0053] The beacons may be distributed into several groups (called anchors) on the same gantry 3. Each beacon is closer to at least one antenna of the same group than to the closest antenna of another group. The distance between two neighboring beacons of the same group is preferably less than 20 centimeters, for example less than 10 centimeters. The distance between two groups is preferably greater than 30 centimeters. The different groups may be spaced from each other in a direction perpendicular to the direction of crossing the gantry.

[0054] Each group may comprise a matrix of tags, each matrix comprising at least N=1 row and M>1 column.

[0055] All the tags 30 within each group can be mounted on the same plate, for example the same PCB card.

[0056] All the beacons 30 within each group can be connected to a common Bluetooth transmitter. The beacons can be connected via a demultiplexer which sends the Bluetooth signal in turn to the different beacons in the group. Within each group, the beacons therefore transmit in turn, cyclically.

[0057] All the beacons of the different groups can be connected to a common Bluetooth transmitter, via a demultiplexer.

[0058] The beacons can transmit successively in several different Bluetooth channels. This makes it possible to minimize the influence of noise caused, for example, by reflections of Bluetooth signals.

[0059] It is for example possible to switch from one Bluetooth channel to another Bluetooth channel each time the Bluetooth signal is switched from one beacon 30 to another.

[0060] It is possible to provide for a beacon to transmit successively on several different channels, in order to minimize the influence of noise.

[0061] At least one camera 31 films the access area. The relative position of the camera 31 is fixed relative to the beacons 30. The camera 31 may be mounted on the gantry 3 and fix the access area 7 from above. The camera 31 may be mounted on the same printed circuit board as the beacons 30, or mounted in a fixed position relative to the printed circuit board.

[0062] The camera 31 may be an RGB camera for filming in the visible range. It can also be an infrared camera in order to film an image less dependent on shadows or reflections. In an advantageous embodiment, the camera 31 is a depth-of-field camera which measures the distance to objects and people filmed in the access zone 7. It is also possible to use several cameras, for example two stereoscopic cameras, to film the access zone 7 from different directions.

[0063] A terminal equipped with one or more front cameras 4 may be provided in order to film visitors Vi in the access area in front view (from the front).

[0064] The camera 31 and the optional camera 4 send images or image sequences to a server 5. The server can be mounted on the gantry 3, or be installed remotely and accessed via a network, for example the Internet, a cellular network, Wi-Fi, etc. The server 5 can also be in the cloud, or comprise several machines connected to each other.

[0065] A software module executed on the server 5 makes it possible to analyze the sequence of top images taken by the camera 31. An example of such an image is illustrated in [Fig.2]; we see several visitors Vj, Vi, Vn, here skiers, as well as equipment of the access zone 7, for example barriers 70 to channel the visitors. The software module performs image pre-processing in order to crop it, correct the contrast, brightness, sharpness, etc. in a second step, the software module makes it possible to single out the different visitors, that is to say to determine which portions of the 2D or 2.5D image correspond to a visitor. The single out can be based on an image analysis. An artificial intelligence system makes it possible to classify the foreground portions (which can be determined using distance measurement and / or contrast detection, for example if the ground is white) and to determine which ones belong to a visitor.Image analysis advantageously makes it possible to distinguish between two visitors side by side, the shape of the whole not corresponding to that of an individual visitor. The distinction between visitors can also be based on distance measurement, for example by determining the local height maxima, corresponding to the tops of the skull or helmet of each visitor. In the case where the access zone is filmed by several cameras 31, for example stereoscopic cameras, the analysis can also include a 3D reconstruction of the scene on the access zone in order to further distinguish the different visitors.

[0066] The software module preferably performs tracking of the visitors singled out over several successive images, in order to reduce the computing power required for each image and to improve the reliability of the singulation. This tracking makes it possible to obtain the trajectory of the center of gravity and the volume of each visitor.

[0067] The software module also determines the center of gravity CGi, in 2D or 3D, of each visitor V;.

[0068] The visitors' mobile equipment 2 receives via their Bluetooth interface the phase-shifted signals emitted by the different beacons 30 and determines their relative position in several successive moments. This position is then transmitted to the server 5 in a message, for example a series of messages or a data stream.

[0069] In an alternative embodiment, the visitors' mobile equipment 2 receives via their Bluetooth interface the phase-shifted signals emitted by the different beacons 30, measures their phase shift and transmits these phase shifts to the server 5 which determines the relative position of the mobile equipment 2.

[0070] The software module receives this or these messages, and checks whether a message is received from a mobile device 2 indicating a position which corresponds to the position CG; of one of the singled out visitors.

[0071] In the event of a match, the server 5 then checks whether the visitor V; has a valid access right. To do this, it can ask the visitor for a message, preferably electronically signed, indicating his access rights. This message can also be included in the message indicating the visitor's position. The access verification can also involve a "challenge-response" mechanism during which the server 5 asks a question (the challenge) to the mobile equipment 2 of the singled-out visitor, to which this mobile equipment can only respond correctly if it has access rights.

[0072] If no mobile equipment transmits a position corresponding to a singled-out visitor, or if a mobile equipment 2 corresponding to the position of a visitor cannot prove that it has access rights, this visitor present in image 8 is unauthorized. It can be marked as such in image 8 if this image is displayed on the terminal of a human supervisor. It is also possible to use this information to block the opening of an access control gate. If such a gate is provided.

[0073] In a preferred embodiment, the front camera captures a static or animated image 9 of the access zone 7 as seen in [Fig. 3], and marks on this image with a marking 301 the unauthorized visitor Vi. The marking may for example comprise the surrounding of the image zone comprising the unauthorized visitor, the highlighting of this zone, etc. The image 9 thus marked is displayed on the terminal 6 of a human supervisor who can thus intercept the unauthorized visitor and ask him for another transport ticket for example. It is also possible to display, and optionally mark, on the supervisor's terminal the image 8 taken by the first camera 31.

[0074] An example of a method according to the invention will be described in more detail in relation to [Fig. 4]. The first column of this figure is a flow diagram of the operations executed by the tags 30. The second column is a flow diagram of flow of operations executed by the top camera 31 and the associated transmission electronics. The third column is a flow diagram of the operations executed by each mobile device 2 whose application is activated. The fourth column is a flow diagram of the operations executed by the server 5.

[0075] During step 100, the beacons 30 on the gantry 3 transmit Bluetooth signals towards the access zone 7. The beacons 30 have no other actions to perform and therefore do not need to be connected to the server 5; however, they can be connected to activate or deactivate them.

[0076] During step 105, the camera 31 captures a still or animated image 8 of the access zone 7 seen from above. This image is then sent to the server 5 during step 106, for example via a cellular, Wi-Fi or other interface. The sequence is repeated so as to generate a video stream or a sequence of still images.

[0077] In another embodiment, a computer is directly connected to the cameras 31 and 4. This computer controls the cameras, processes the images, and sends the access requests and visitor passage information to the server 5.

[0078] During step 110, the mobile equipment 2 of each visitor in the access zone having activated Bluetooth receives the Bluetooth signals emitted by the beacons 30.

[0079] During step 112, a software application executed by at least some of these mobile devices 2 determines the position of this mobile device from the phase differences between the signals received from the different beacons, which allows it to determine the starting angle of these signals and from there the relative position of the mobile device 2 with respect to the beacons 30. This relative position is sent to the server 5 during step 114, for example in the form of a message, by writing to the server 5, etc.

[0080] During step 116, the application of at least some mobile equipment communicates its access rights to the controlled area to the server 5. This step can be carried out spontaneously, or on demand; for example, the mobile application can send a response to a challenge received from the server 5 in order to prove its access rights.

[0081] The communications from the mobile equipment 2 to the server 5 are preferably electronically signed so as to allow the server 5 to ensure that the positions and access rights received actually come from the intended mobile equipment 2, and to prevent another mobile equipment from usurping an identity.

[0082] During step 120, the software module in the server 5 receives an image 8 or a video stream from the camera 31. During step 122, this software module performs a preprocessing of the received image 8, then singles out the different visitors V; represented in the image. This singles out can be performed by image processing and / or by based on the depth information given by the camera's distance measuring sensor 31.

[0083] During step 124, the software module determines the individual position of each visitor singled out in image 8, for example the position of their center of mass CG;. The position can be determined in 2D or preferably in 3D using the distance measuring camera 31.

[0084] During step 126, the server 5 receives the position of each piece of equipment that communicated it to it. This reception can occur at any time and repeatedly.

[0085] During step 128, the software module of the server 5 verifies the access rights of each device that has communicated them. This verification can be carried out following the reception of a message from this mobile device, or at the request of the server. In one embodiment, the verification comprises an identification or authentication of the mobile device 2, with an identification or authentication protocol, then the verification of the access rights of the identified or authenticated visitor in a database accessible by the server.

[0086] During step 130, the software module of the server 5 checks for each visitor singled out during step 122 whether the position of this visitor in the access zone 7, determined from the images of the camera 31 during step 124, corresponds to the position of a mobile device 2 received during step 126.

[0087] A correspondence is established for example if the distance between the center of gravity CG; of the visitor V;, determined from the image 8, and the position of a mobile device received during the step 124 does not exceed a threshold value, for example 50 cm. The distance can be measured in 3D; it is indeed improbable that a visitor carries his mobile device close to the ground, or above his head for example. In a variant, a correspondence can be established if the position transmitted by the mobile device 2 corresponds to a portion in 2D or in 3D of the singularized visitor.

[0088] If no mobile device 2 indicates a position corresponding to a singled-out visitor Vi, the method continues at step 134. Otherwise, when the singled-out visitor Vi has mobile device equipped with the application which emits a position corresponding to that of the visitor in image 8, the method continues at step 132 during which a decision is taken based on the access rights of this visitor.

[0089] If the access rights are valid and the visitor is authorized to access the controlled area, the method returns to step 120. In a variant, the visitor is counted. It is also possible to debit a monetary account linked to this visitor to charge him for access. The method may also include the opening of an optional gate to allow the passage of the authorized visitor.

[0090] Otherwise, that is to say if the singled-out visitor V; does not have access rights to the controlled area, the method continues at step 134. During this step, a still or animated photo of the visitor is taken by the front camera. The unauthorized visitor can be marked on this image by means of a marking 301. The image thus captured is transmitted to the terminal of a nearby human supervisor, for example in order to block the passage of this unauthorized visitor, to sell him a ticket, or to ask him to prove his right of access in another way.

[0091] Instead of, or in addition to, step 134, other reactions may be taken during step 136 in order to react to the presence of an unauthorized visitor in the access zone 7. For example, it is possible to block an optional gate, to emit an audible and / or visual alarm (for example the display of a message on a screen visible from the reception area), or to send a message to the mobile equipment of this visitor in order to allow him to purchase an access right, or to ask him to leave the access zone 7. [Tables 1] Reference numbers used in figures V Visitor 2 Mobile equipment 3 Gantry 30 Beacons 31 Camera linked to the gantry. 4 Front camera 5 Server 6 Access controller terminal 7 Access zone 70 Barriers 8 Top image of the access zone, captured with camera 31 linked to the gate 9 Front image of the access zone, captured with front camera 4 100 Emission of Bluetooth signals by beacons 30 105 Capture a top image 8 of the access zone 7 106 Send the top image 8 of the access zone to server 5 110 Receive signals from beacons 30 112 Determine the position of the mobile device 114 Send a message with the position of the mobile device and its access rights 120 Receive in server 5 the top image of the access zone 7 122 Image processing and singling out visitors V; on the top image.124 Determine the position of the visitors singled out from the top image 8 126 Receive messages from visitors V; with the position of their mobile equipment 128 Check the access rights of visitors V; 130 For each visitor singled out, check whether a message received indicates a position of the mobile equipment corresponding to the position of the visitor determined from image 8. 132 For each singled-out visitor, check the access rights of mobile device 2 at the corresponding position 134 Capture or save a frontal photo 9 of a singled-out but unauthorized visitor 136 Other reaction to the presence of a singled-out but unauthorized visitor 201 Marking a visitor on the image 200 301 Marking a visitor on the image 300

Claims

Claims

1. Method for controlling visitors (V) in an access zone (7) inside a leisure park, for example a ski area or an amusement park, comprising: Emitting (100) Bluetooth signals towards the access zone with several beacons (30) mounted on a common gantry (3), the relative position of the beacons being known; Filming (105) said access zone using a first camera (31) looking downwards, so as to generate a fixed or animated image (8) of the access zone seen from above; Singularizing (122) at least one visitor in said image; Obtaining (126) in a server (5) a position of at least one mobile device (2), for example a smartphone or a smartwatch, determined using said Bluetooth signals; Checking (130) whether a said position of a said mobile device corresponds to a position of said singled-out visitor; Check (132) the right of access of said individual visitor.

2. Method according to claim 1, the position of said mobile equipment (2) being determined by said mobile equipment and received by said server (5).

3. Method according to one of claims 1 or 2, comprising a step of determining at least one unauthorized visitor whose position determined with said image (8) does not correspond to a received position, or at least one unauthorized visitor who does not have access rights to the controlled access zone.

4. A method according to claim 3, comprising capturing (134) an image (9) of said unauthorized visitor using an additional camera (4).

5. Method according to one of claims 3 or 4, comprising a marking (301) of an image portion (9) comprising said unauthorized visitor.

6. Method according to one of claims 2 to 5, in which said mobile equipment (2) determines its position using the Bluetooth AOD (Angle of Departure) method.

7. A method according to claim 6, wherein Bluetooth signals are emitted by said plurality of beacons (30) distributed in plurality of groups on said gantry, the antennas of each group being arranged in a matrix.

8. A method according to one of claims 6 or 7, wherein a transmitter Bluetooth sends a signal successively to several beacons via a demultiplexer.

9. Method according to one of claims 6 to 8, in which a Bluetooth signal is transmitted from said beacons (30) successively in several different channels.

10. Method according to one of claims 6 to 9, in which a Bluetooth signal is transmitted successively from several beacons (30) successively in several different channels.

11. Method according to one of claims 7 to 10, said beacons (30) of each group being mounted on the same substrate, for example the same printed circuit board, on said gantry.

12. Method according to one of claims 1 to 11, said first camera (31) being a distance measuring camera.

13. Method according to one of claims 1 to 12, said first camera (31) being mounted on said gantry (3).

14. Visitor control system (V) in an access zone (7) inside a leisure park, for example a ski area or an amusement park, comprising: A gantry (3); Beacons (30) mounted on the gantry (3); A transmitter connected to said beacons so that these beacons emit Bluetooth signals towards the access zone (7); A first camera (31) looking downwards to film the access zone (7), so as to generate a fixed or animated image (8) of the access zone seen from above; A software module for singling out at least one visitor in said image (8); A software module for obtaining at least one position of a mobile device, for example a smartphone or a smartwatch, determined by this mobile device; A software module for checking whether a said position of a said mobile device corresponds to a position of a singled-out visitor;A software module to verify the access rights of said individual visitor.;

15. A system according to claim 14, comprising an additional camera (4) for capturing a frontal image of unauthorized visitors in the access area.

Images