Abstract: A method for preventing misuse of electronic access permissions, managed in mobile electronic devices using a wallet application and transmitted by a server. A link is purchased from the server, during which a password or authentication data and a mobile electronic device, are specified via the link. When activating the link, an ID of the first mobile electronic device, which is associated with an ID of the purchased access permission, is transmitted to the server. The electronic access permission is only transferable from the first mobile electronic device to another mobile electronic device after the password is first entered with the server. Upon transfer, in the server the access permission ID is associated with the ID of the other mobile electronic device and the access permission stored on the first mobile electronic device is marked as invalid.

Abstract: A method of reading out access authorizations or ID's from at least one customer medium by at least one reader (3, 4, 5) of an access control device (2) and evaluating the selected ID's or access authorizations. All readers are activated and perform a scan for ID's or access authorizations, which can be contained or stored in at least one customer medium. The selected ID's or access authorizations are transmitted to a controller which temporarily stores and transmits them to an evaluation unit (1) while the readers continue to scan for possible ID's or access authorizations. If an evaluation in the evaluation unit finds that a selected access authorization is valid or allocated to a selected ID, the readers are deactivated, and access is granted. If, after a prescribed time, no further ID's or access authorizations are read out, transmitted and recognized as valid, then access is denied.

Abstract: A method of operating an access control system comprising a server (3), a control device (4) and a point of sales device (1) for access permissions to a covered area. An algorithm is installed on the point of sales device (1) which can only be executed locally if unlocked by a key transmitted by the server. If a point of sales device is not connected to the server, the algorithm is executed using the key and access permission is generated, encrypted and marked as an offline-generated access permission and encoded. If access control is carried out while the point of sales device is unconnected, the offline-generated access permission is read out by an access control device (4). Based on labelling as an offline-generated access permission, it is identified as such and the validity of the access permission is verified based on the data encoded by the point of sales device.

Abstract: A method for preventing misuse of electronic access permissions, managed in mobile electronic devices using a wallet application and transmitted by a server. A link is purchased from the server (2), during which a password or authentication data and a mobile electronic device, are specified via the link. When activating the link, a unique ID of the first mobile electronic device (3), which is associated with an ID of the purchased access permission, is transmitted to the server (2). The electronic access permission is only transferable from the first mobile electronic device (3) to another mobile electronic device (4) after the password is first entered with the server (2). Upon successful transfer, in the server (2) the access permission ID is now associated with the ID of the other mobile electronic device (4) and the access permission stored on the first mobile electronic device (3) is marked as invalid.

Abstract: A method of reading out access authorizations or ID's from at least one customer medium by at least one reader (3, 4, 5) of an access control device (2) and evaluating the selected ID's or access authorizations. All readers are activated and perform a scan for ID's or access authorizations, which can be contained or stored in at least one customer medium. The selected ID's or access authorizations are transmitted to a controller which temporarily stores and transmits them to an evaluation unit (1) while the readers continue to scan for possible ID's or access authorizations. If an evaluation in the evaluation unit finds that a selected access authorization is valid or allocated to a selected ID, the readers are deactivated, and access is granted. If, after a prescribed time, no further ID's or access authorizations are read out, transmitted and recognized as valid, then access is denied.