Access control system

Abstract

The invention relates to an access control system comprising: - an area (1) to be controlled having at least one entry door (11) and at least one exit door (12); - an entry terminal (21) capable of controlling the opening and closing of the entry door (11); - an exit terminal (22) capable of controlling the opening and closing of the exit door (12); - a fleet of keys (3) each carrying a unique identifier, the entry terminal (21) and the exit terminal (22) each integrating a device for recognizing the unique identifiers; - a computer platform (4) connected to a database (5) listing the unique identifiers and a status code for each unique identifier; - means of communication between the computer platform (4) and the entry terminal (21) on the one hand and, on the other hand, between the computer platform (4) and the exit terminal (22).

Description

[0001] The field of the invention is that of the design and manufacture of an access control system.

[0002] More specifically, the invention relates to a system for controlling access to an area using keys each carrying a unique identifier recognized by recognition devices located at the entrances and exits of the area to be controlled.

[0003] An access control system allows entry and exit into an area.

[0004] This system uses recognition devices located at the entrances and exits of the area to be controlled.

[0005] The entrances and exits to this area include doors whose opening and closing can be controlled by the system.

[0006] The expression door is more generally understood to mean a device blocking a passage, for a pedestrian or a vehicle, such as a barrier, an airlock, a turnstile, a door in the literal sense of the term.

[0007] The expression opening, or the expression closing, is understood to mean the passage of the door from a position of closing a passage, to a position of releasing the passage. It is also understood that the opening or closing can only concern the actuation of means of locking the door in a position of closing the passage.

[0008] The system also uses keys, each with a unique identifier. Each key is intended to be carried by a person wishing to move around the area. A key includes, but is not limited to, a standard key with a pin and a bit, a badge, a magnetic card or one equipped with an electronic chip, or a specific application loaded onto a smartphone.

[0009] The system also includes a database listing unique identifiers, the keys associated with them, as well as the authorizations granted to these keys and more specifically to these unique identifiers.

[0010] The entrances and exits of the area are thus equipped with terminals comprising recognition devices designed to communicate with the keys, and recognize the unique identifier associated with the key.

[0011] Such an access control system makes it possible to control access to the area, but also to restrict access over time and based on the unique identifiers carried by the keys.

[0012] A feature called "anti-passback" can be integrated into the access control system. This feature, which aims to significantly increase the security of the system, is necessary to control and guarantee the way a person moves within the area. Concretely, this feature aims to prevent a person from entering the area twice without having left in the meantime, or from leaving the area twice without having re-entered it in the meantime.

[0013] The access system then memorizes when a key is presented at an entry or exit terminal, initially causing the opening or closing of a form, and prohibits the opening or closing of a door if the key is presented again at a second time respectively at an entry or exit terminal. In practice, such non-compliance with the rules of movement in the controlled area results in the suspension of the authorizations associated with the unique identifier of the key.

[0014] A problem with this feature is the need for human intervention to unlock a key or terminal following non-compliance with the routing rules.

[0015] Another problem lies in the blocking of a terminal resulting from a failure to comply with the routing rules by a user of the system, and impacting other users of the system who comply with said rules.

[0016] In the field of the invention, there is also known the patent document published under the number US 2017 / 270722 A1, which describes an access control system.

[0017] The invention aims in particular to overcome these drawbacks of the prior art.

[0018] More specifically, the invention aims to propose an access control system as previously described provided with an “anti-passback” type functionality requiring less human operator intervention than the control systems according to the prior art.

[0019] The invention also aims to provide such a system which avoids impacting all users of the system following non-compliance with the routing rules by a single user.

[0020] These objectives, as well as others which will appear subsequently, are achieved thanks to the invention which relates to an access control system comprising: an area to be controlled having at least one entry door and at least one exit door; an entry terminal capable of controlling the opening and closing of the entry door; an exit terminal capable of controlling the opening and closing of the exit door; a fleet of keys each carrying a unique identifier, the entry terminal and the exit terminal each incorporating a device for recognizing the unique identifiers; a computer platform connected to a database listing the unique identifiers and a status code for each unique identifier; means of communication between the computer platform and the entry terminal on the one hand and, on the other hand, between the computer platform and the exit terminal, characterized in that the computer platform is configured to: memorize four key status codes: ∘ a status code “0” to be assigned to each unique identifier before a first presentation of the latter to the recognition device of an entry terminal or an exit terminal; ∘ a status code “1” to be assigned to each unique identifier after a presentation of the latter to a recognition device of the entry terminal, and the opening of the entry door; ∘ a status code “2” to be assigned to each unique identifier after a presentation of the latter to a recognition device of the exit terminal, and the opening of the exit door;∘ a status code “3” to be assigned to any unique identifier after two successive presentations of the latter to a recognition device of an entry terminal or two successive presentations of the latter to a recognition device of an exit terminal, block the opening control of the entry door or the exit door after two successive presentations of a unique identifier to a recognition device of an entry terminal or two successive presentations of a unique identifier to a recognition device of an exit terminal, or after a presentation to the recognition device of one of their terminals of a key whose unique identifier is associated with a status code “3”; authorize an opening control of the entry door after a presentation to the recognition device of the entry terminal of a key whose unique identifier is associated with a status code “0” or a status code “2”;authorize the opening of the exit door after presentation to the exit terminal recognition device of a key whose unique identifier is associated with a status code “0” or a status code “1”.;

[0021] The access control system according to the invention requires less human operator intervention than control systems according to the prior art.

[0022] Indeed, thanks to its status codes, including status code "0" and status code "3", the access control system avoids blocking situations requiring human operator intervention to unblock them, and inconvenience for system users who respect the routing rules.

[0023] More specifically, by formalizing the introduction of a unique identifier with a status code "0", the cycling of a new key is simplified. The expression "cycling" means the integration of a new key into the control system and its correct coding in relation to the zone to be controlled once the cycling is complete (the keys located outside the zone must have their unique identifier associated with a status code "2", and the keys located in the zone must have their unique identifier associated with a status code "1").

[0024] In addition, assigning a status code of "3" to a user who does not comply with the routing rules avoids blocking a terminal and impacting other users who can continue to present their key to said terminal which is not in a blocked situation, only the key with a status code of "3" being blocked.

[0025] Preferably, the IT platform is configured to memorize a restoration time, and to: assigning a status code “1” to a unique identifier associated with a status code “3” following two successive presentations thereof to a device for recognizing an output terminal, if said unique identifier is presented to a device for recognizing an input terminal during the restoration delay initialized during the association with a status code “3” to the unique identifier; assigning a status code “2” to a unique identifier associated with a status code “3” following two successive presentations thereof to a device for recognizing an input terminal, if said unique identifier is presented to a device for recognizing an output terminal during the restoration delay initialized during the association with a status code “3” to the unique identifier.

[0026] In this way, a user with a key is allowed to be able to get back into the cycle by themselves after not having respected the routing rules if they make the missing correct presentation during the restoration period. This constitutes a sort of "right to make mistakes", authorizing a user to restore their rights by respecting a second level of rules.

[0027] Advantageously, the IT platform is configured to receive a recycle request for a unique identifier associated with a status code of “3”.

[0028] Such a request allows a unique identifier associated with a status code of “3” to be re-cycled. This request can be carried out by an automatic intervention following a predetermined event, for example user authentication on a computer server associated with a re-cycling request, or by a manual intervention by a human operator with access rights.

[0029] According to an advantageous characteristic, the computer platform is configured to receive, following a re-cycle request, re-cycle acceptance data for a unique identifier associated with a status code “3” and to assign said unique identifier a status code “0”.

[0030] With this design, a key can be presented to an input terminal or an output terminal when it is cycled.

[0031] Advantageously, the database includes, for each unique identifier, a call number of a mobile computing unit, and the computing platform is configured to issue an error notification to the mobile computing unit associated with a unique identifier whose status code is “3”.

[0032] The mobile computing unit associated with the unique identifier may, for example, correspond to the smartphone of the person to whom the key belongs. This allows that person to be informed of the error directly via their mobile computing unit.

[0033] In this case, preferably, the error notification includes restoration procedure data and the restoration time.

[0034] According to an advantageous design, the access control system comprises, for each of the entry door and the exit door, a door return device in the closed position capable of closing the entry door or the exit door after a predetermined opening time, and the access control system comprises an anomaly sensor capable of emitting an anomaly signal to the platform when the entry door or the exit door is not in the closed position after the predetermined opening time.

[0035] This design allows for rapid awareness of the non-closing of a door, and thus the possibility that keys were not presented to the door terminal, and thus recognized by the door terminal, by users of the system when passing through the open door.

[0036] Preferably, the platform is configured to assign the status code “0” to at least some of the unique identifiers in the event of receipt of the anomaly signal.

[0037] This allows any user who has not respected the routing rules to be easily put back into the cycle following such an anomaly.

[0038] Other characteristics and advantages of the invention will appear more clearly on reading the following description of a preferred embodiment of the invention, given as an illustrative and non-limiting example, and the single attached drawing:

[0039] There figure 1 is a schematic representation of the access control system according to the invention.

[0040] In reference to the figure 1 , an access control system according to the invention is illustrated.

[0041] The access control system includes a zone 1 to control

[0042] This zone 1 to be controlled has at least one entry door 11 and at least one exit door 12.

[0043] As explained above, by "door" is meant a device blocking a passage, for a pedestrian or a vehicle, such as, but not limited to, a barrier, an airlock, a turnstile, or even a door in the proper sense of the term.

[0044] In this case, zone 1 to be controlled has two entry doors 11, and two exit doors 12.

[0045] It is conceivable that at least one door, or even each door of zone 1 to be controlled (i.e. the access doors to zone 1) forms both an entry door 11 and an exit door 12.

[0046] For example, it is possible that zone 1 to be controlled has a single door forming both the entry door 11 and the exit door 12.

[0047] The access control system also includes: an input terminal 21 capable of controlling the opening and closing of the entrance door; an output terminal 22 capable of controlling the opening and closing of the exit door.

[0048] As mentioned above, the expressions opening or closing are understood to mean the passage of the door from a position closing a passage to a position releasing the passage, but also the locking of the door in a position closing the passage or its unlocking. Opening and closing may consist only of locking or unlocking the door, the actuation of the door to move it from its closing position to its releasing position may be left to a user, or to a motor triggered by another sensor such as a presence sensor.

[0049] The access control system also includes a fleet of 3 keys.

[0050] These keys can, for example, take the form of a small, easily transportable object, such as a rigid card or a badge, equipped for example with an electronic chip, a magnetic strip, or an inscription capable of being read by a special scanner.

[0051] Each 3-digit key has a unique identifier. This unique identifier makes it possible to precisely identify the 3-digit key among all the 3-digit keys recognized by the system.

[0052] To enable the control of keys 3, each entry terminal 21 and each exit terminal 22 incorporates a device for recognizing unique identifiers.

[0053] The unique identifier may, for example, take the form of a unique code integrated into an electronic chip present on the key 3. In this case, the recognition device may communicate with the electronic chip in order to enable the reading of the unique code integrated into the electronic chip.

[0054] The unique identifier can also take the form of a code marked on the key 3, for example a barcode, or a QR code. In this case, the recognition device is designed to read the code marked on the key 3.

[0055] It is conceivable that the key 3 of a user of the system is formed by a mobile electronic unit of the user, the key 3 taking for example the form of a software application, and that the unique identifier corresponds to a unique code stored in the mobile electronic unit and available via the software application. In this case, a near-field communication function of the mobile electronic unit can be used to establish communication with the recognition device of a terminal which is then also provided with the electronic elements allowing it to establish such communication.

[0056] The access control system also includes: a database 5 listing the unique identifiers; a computer platform 4 connected to the database 5 listing the unique identifiers.

[0057] For illustrative purposes and with reference to Figure 2, six keys 3 are shown and each key 3 has a unique identifier: A, B, C, D, E, and F (it is understood that, in practice, the identifiers comprise a predetermined number of characters depending on the number of keys in the fleet, the characters being able for example to be alphabetic and / or numeric). As shown, each unique identifier A, B, C, D, E, and F is listed in the database 5.

[0058] The IT platform 4 corresponds, for example, to a computer server which can be of the “local” type by being located in the zone 1 to be controlled, or which can be of the “remote” type by being hosted on the Internet.

[0059] The database 5 then corresponds to at least one electronic means of collecting and organizing electronic information designed to be able to be consulted and modified by at least the computer platform 4.

[0060] It is also conceivable that the computer platform 4 is composed of a plurality of electronic sub-units each integrated, for example, within an input terminal 21 or an output terminal 22.

[0061] In this case, the database 5 may comprise a single electronic means for collecting and organizing electronic information which each electronic sub-unit can access, or may comprise a plurality of storage sub-units each hosted in the input terminals 21 or in the output terminal 22 while being associated with the electronic sub-units.

[0062] The access control system also includes means of communication between the computer platform and the entry terminal on the one hand and, on the other hand, between the computer platform and the exit terminal.

[0063] As detailed below, these means of communication allow the input terminals and the output terminals to communicate the unique identifiers recognized by the recognition devices to the computer platform 4, that is to say to query the computer platform 4 on the recognized unique identifier. These means of communication also allow the terminals to receive instructions from the computer platform 4.

[0064] This computer platform 4 is configured to memorize four key status codes: a status code “0” to be assigned to each unique identifier before a first presentation thereof to the recognition device of an input terminal 21 or an output terminal 22, a status code “1” to be assigned to each unique identifier after a presentation thereof to a recognition device of the input terminal 21, and the opening of the input door 11; a status code “2” to be assigned to each unique identifier after a presentation thereof to a recognition device of the output terminal 22, and the opening of the output door 12; a status code “3” to be assigned to any unique identifier after two successive presentations thereof to a recognition device of an input terminal 21 or two successive presentations thereof to a recognition device of an output terminal 22.

[0065] This storage of the computer platform 4 corresponds to a writing of the status code in the database 5 in association with a unique identifier.

[0066] The status code “1” corresponds to the status code which must be associated with a unique identifier of a key 3 located in the zone 1 to be controlled, this status code being assigned after recognition at an entry terminal 21, and the opening of the entry door 11 associated with this entry terminal 21.

[0067] The status code “2” corresponds to the status code which must be associated with a unique identifier of a key 3 located outside the zone 1 to be controlled, this status code being assigned after recognition at an exit terminal 22 and the opening of the exit door 12 associated with this exit terminal 22.

[0068] Status code "0" corresponds to a cycling of a unique identifier of a key 3.

[0069] Finally, status code “3” corresponds to a status code resulting from an incorrect application of the routing rules.

[0070] As shown as an example on the figure 1 : status code “0” is assigned to unique identifier A, and to unique identifier E; status code “1” is assigned to unique identifier B; status code “2” is assigned to unique identifier C, and to unique identifier F; status code “3” is assigned to unique identifier D.

[0071] The IT platform 4 is also configured to: authorize an opening control of the entrance door 11 after presentation to the recognition device of the entrance terminal 21 of a key 3 whose unique identifier is associated with a status code “0” or a status code “2”, authorize an opening control of the exit door 12 after presentation to the recognition device of the exit terminal 22 of a key 3 whose unique identifier is associated with a status code “1”, block the opening control of the entrance door and the exit door after presentation to the recognition device of one of them of a key whose unique identifier is associated with a status code “3”.

[0072] According to the present embodiment, the access control system comprises a door return device in the closed position for each entrance door 11 and a door return device in the closed position for each exit door 12. These return devices are configured to return the doors to the closed position after a predetermined opening time. For example, a return device may take the form of a motorized arm.

[0073] Furthermore, still according to the present embodiment, the access control system comprises an anomaly sensor capable of emitting an anomaly signal to the computer platform 4 when the entry door 11 or the exit door 12 is not in the closed position after the predetermined opening time.

[0074] This anomaly signal can be relayed to a human operator of the access control system so that they can check the anomaly and carry out maintenance work on the door and its door return device to the closed position if necessary.

[0075] In the situation illustrated on the figure 1 , keys 3 with unique identifiers A, B and F are located outside zone 1 to be controlled, while keys 3 with unique identifiers C, D and E are located in zone 1 to be controlled.

[0076] The scenarios described below can therefore occur.

[0077] When the key 3 having the unique identifier A is presented to an entry terminal 21, its identifier is recognized by the recognition device and is communicated to the computer platform 4. The latter reads the status code “0” assigned to the unique identifier A in the database 5, then authorizes the opening control of the entry door 11, and assigns a new status code “1” to the unique identifier A. After the predetermined opening time, the entry door 11 closes.

[0078] When the key 3 having the unique identifier B is presented to an entry terminal 21, its identifier is recognized by the recognition device and is communicated to the computer platform 4. The latter reads the status code “1” assigned to the unique identifier B in the database 5, which then corresponds to two successive presentations of the unique identifier to a recognition device of an entry terminal. The computer platform 4 then blocks the opening control of the entry door 11, and assigns a new status code “3” to the unique identifier, replacing its initial status code “1”.

[0079] When the key 3 having the unique identifier C is presented to an exit terminal 22, its identifier is recognized by the recognition device and is communicated to the computer platform 4. The latter reads the status code “2” assigned to the unique identifier C in the database 5, which then corresponds to two successive presentations of the unique identifier to a recognition device of an exit terminal. The computer platform 4 then blocks the opening control of the exit door 12, and assigns a new status code “3” to the unique identifier, replacing its initial status code “2”.

[0080] When the key 3 having the unique identifier D is presented to an exit terminal 22, its identifier is recognized by the recognition device and is communicated to the computer platform 4. The latter reads the status code “3” assigned to the unique identifier D in the database 5, and then blocks the opening control of the exit door 21.

[0081] When the key 3 having the unique identifier E is presented to an exit terminal 22, its identifier is recognized by the recognition device and is communicated to the computer platform 4. The latter reads the status code “0” assigned to the unique identifier E in the database 5, then authorizes the opening control of the exit door 21, and assigns a new status code “2” to the unique identifier E. After the predetermined opening time, the exit door 12 closes.

[0082] When the key 3 having the unique identifier F is presented to an entry terminal 21, its identifier is recognized by the recognition device and is communicated to the computer platform 4. The latter reads the status code “2” assigned to the unique identifier F in the database 5, then authorizes the opening control of the entry door 11, and assigns a new status code “1” to the unique identifier F. After the predetermined opening time, the entry door 11 closes.

[0083] It appears from the above that the control system allows the unique identifiers of keys 3 of persons who do not comply with the routing rules to be removed from the cycle formed by status codes "1" and "2" (which must follow one another when the routing rules are correctly observed). This exclusion from the cycle is formalized by status code "3" which prevents the user of the key associated with the excluded unique identifier from passing through an entry door 11 or an exit door 12 of zone 1 to be controlled.

[0084] According to the present embodiment, the database 5 also comprises, for each unique identifier, a call number of a mobile computing unit, and the computing platform 4 is configured to issue an error notification to the mobile computing unit associated with a unique identifier whose status code is “3”.

[0085] The mobile computing unit may be that of a human operator in charge of implementing the area control system, thus enabling him to become aware of the exclusion of a unique identifier.

[0086] The mobile computing unit can also be that of the user with key 3 whose unique identifier has been excluded.

[0087] The sending of the error notification naturally occurs directly or shortly after the unique identifier changes to status code "3".

[0088] As detailed below, this embodiment of the control system includes provisions for reintegrating an excluded unique identifier into the cycle, this corresponding to a re-cycling.

[0089] According to the present embodiment, the computing platform 4 is configured to store a restoration delay, and is also configured to: assigning a status code “1” to a unique identifier associated with a status code “3” following two successive presentations thereof to a device for recognizing an output terminal 22, if said unique identifier is presented to a device for recognizing an input terminal 21 during the restoration delay initialized during the association with a status code “3” to the unique identifier; assigning a status code “2” to a unique identifier associated with a status code “3” following two successive presentations thereof to a device for recognizing an input terminal 21, if said unique identifier is presented to a device for recognizing an output terminal 22 during the restoration delay initialized during the association with a status code “3” to the unique identifier.

[0090] This allows a user who has just been excluded from the cycle to reintegrate into the cycle by going directly to have the unique identifier of his key 3 recognized on the terminal of the door that he would normally have had to go through to respect the cycle.

[0091] In the event that the error notification is issued to the user's mobile computing unit with the excluded identifier, the error notification includes a restoration procedure data and the restoration time.

[0092] This allows the user to know how to proceed to reset the unique identifier of their key 3, as well as the time limit for doing so.

[0093] In the context of the present embodiment, it is possible for a sub-variant of the status code “3” to be assigned to the unique identifier after its successive double presentation to a device for recognizing an output terminal 22 or to the device for recognizing an input terminal 21, this or these other sub-variants of the status code “3” allowing the cycle to be restarted during the restoration period.

[0094] In particular, the computing platform 4 can also be configured to: assigning a status code “3” under version “a”, hereinafter called status code “3a” to a unique identifier following two successive presentations of the latter to a recognition device of an input terminal 21, the status code “3a” authorizing the assignment of the status code “1” to the unique identifier, if said unique identifier is presented to a recognition device of an output terminal 22 during the restoration period initialized during the association of the status code “3a” with the unique identifier;assigning a status code “3” under version “b”, hereinafter called status code “3b” to a unique identifier following two successive presentations of the latter to a device for recognizing an output terminal 22, the status code “3b” authorizing the assignment of the status code “2” to the unique identifier, if said unique identifier is presented to a device for recognizing an input terminal 21 during the restoration period initialized during the association of the status code “3b” with the unique identifier.;

[0095] Recycling can also be performed either automatically by the computer platform 4 or by a human operator of the access control system via the computer platform 4.

[0096] For this purpose, the computer platform 4 is configured to receive a re-cycle request for a unique identifier associated with a status code “3”.

[0097] This re-cycle request may be automatically requested from the IT platform 4 as soon as a status code “3” is assigned, or at the express request of the user who has seen the unique identifier of his key 3 excluded, for example via a request made with his mobile IT unit following receipt of the error notification.

[0098] If the request is accepted, for example by a human operator of the system via an input device, the computer platform 4 is configured to receive a re-cycle acceptance data for the unique identifier associated with the status code “3” and to assign said unique identifier a status code “0”.

[0099] It is also possible that the IT platform 4 is configured to allow the unique identifier to be assigned a status code “1” or “2” if the manager knows the position of the key 3 of the unique identifier in relation to the zone 1 to be controlled.

[0100] Finally, the platform is configured to assign the status code “0” to at least some of the unique identifiers in the event of receipt of the anomaly signal, which, as a reminder, corresponds to a situation where the entry door 11 or the exit door 12 is not in the closed position after the predetermined opening time.

[0101] Indeed, it is possible that system users have passed through the unlocked door without having authenticated their key on the recognition device of the terminal of the door that remained open. In this case, the status code of their unique key identifier would not reflect their entry or exit from the zone 1 to be controlled, which would result in their exclusion from the cycle.

[0102] Also, the automatic assignment of the status code "0" to automatically reset at least certain identifiers can be carried out in order to avoid a mass blocking of users of the system. Various solutions can be implemented in particular in order to determine the unique identifiers that have not carried out such authentication, such as for example sending a request for information to users likely to have carried out such an action, followed by a verification and then a validation of a reset by a system operator.

Claims

1. Access control system comprising: - an area (1) to be controlled having at least one entry door (11) and at least one exit door (12); - an entry terminal (21) capable of controlling the opening and closing of the entry door (11); - an exit terminal (22) capable of controlling the opening and closing of the exit door (12); - a fleet of keys (3) each carrying a unique identifier, the entry terminal (21) and the exit terminal (22) each integrating a device for recognizing the unique identifiers; - a computer platform (4) connected to a database (5) listing the unique identifiers and a status code for each unique identifier; - means of communication between the computer platform (4) and the entry terminal (21) on the one hand and, on the other hand, between the computer platform (4) and the exit terminal (22); characterized in thatthe computer platform (4) is configured to: - store four status codes of the keys (3): ∘ a status code “0” to be assigned to each unique identifier before a first presentation of the latter to the recognition device of an entry terminal (21) or an exit terminal (22); ∘ a status code “1” to be assigned to each unique identifier after a presentation of the latter to a recognition device of the entry terminal (21), and the opening of the entry door (11), ∘ a status code “2” to be assigned to each unique identifier after a presentation of the latter to a recognition device of the exit terminal (22), and the opening of the exit door (12);∘ a status code “3” to be assigned to each unique identifier after two successive presentations of the latter to a recognition device of an entry terminal (21) or two successive presentations of the latter to a recognition device of an exit terminal (22), - block the opening control of the entry door (11) or the exit door (12) after two successive presentations of a unique identifier to a recognition device of an entry terminal (21) or two successive presentations of a unique identifier to a recognition device of an exit terminal (22), or after a presentation to the recognition device of one of their terminals of a key (3) whose unique identifier is associated with a status code “3”;- authorize an opening control of the entrance door (11) after presentation to the recognition device of the entrance terminal (21) of a key whose unique identifier is associated with a status code “0” or a status code “2”; - authorize an opening control of the exit door (12) after presentation to the recognition device of the exit terminal (22) of a key (3) whose unique identifier is associated with a status code “0” or a status code “1”.; 2. Access control system according to claim 1, characterized in thatthe computer platform (4) is configured to store a restoration time, and to: - assign a status code "1" to a unique identifier associated with a status code "3" following two successive presentations thereof to a device for recognizing an output terminal (22), if said unique identifier is presented to a device for recognizing an input terminal (21) during the restoration time initialized during the association with a status code "3" to the unique identifier; - assign a status code "2" to a unique identifier associated with a status code "3" following two successive presentations thereof to a device for recognizing an input terminal (21), if said unique identifier is presented to a device for recognizing an output terminal (22) during the restoration time initialized during the association with a status code "3" to the unique identifier.

3. Access control system according to claim 2, characterized in that the computer platform (4) is configured to receive a re-cycle request for a unique identifier associated with a status code “3”.

4. Access control system according to claim 3, characterized in that the computer platform (4) is configured to receive, following a re-cycle request, re-cycle acceptance data for a unique identifier associated with a status code “3” and to assign a status code “0” to said unique identifier.

5. Access control system according to any one of the preceding claims, characterized in that the database (5) includes, for each unique identifier, a call number of a mobile computing unit, and in that the computing platform (4) is configured to issue an error notification to the mobile computing unit associated with a unique identifier whose status code is “3”.

6. Access control system according to claims 2 and 5, characterized in that The error notification includes a recovery procedure data and the recovery time.

7. Access control system according to any one of the preceding claims, characterized in that it comprises, for each of the entrance door (11) and the exit door (12), a device for returning the door to the closed position capable of closing the entrance door (11) or the exit door (12) after a predetermined opening time, and in that it comprises an anomaly sensor capable of emitting an anomaly signal to the computer platform (4) when the entrance door (11) or the exit door (12) is not in the closed position after the predetermined opening time.

8. Access control system according to claim 7, characterized in thatthe computer platform (4) is configured to assign to at least some of the unique identifiers the status code “0” in the event of reception of the anomaly signal.

Images