Patent ID: 11963001
Assignee: ASSA ABLOY AB
Field: Control (Instruments)
Classification: CPC G  H | IPC G  H

Claim 11:
12. A method comprising:
receiving, at a wireless communication device positioned at or near an outer perimeter, a decryption key from a key issuance system, wherein the outer perimeter contains an inner perimeter;
storing the decryption key at the wireless communication device;
transmitting the decryption key from the wireless communication device to a mobile communication device within communication proximity of the wireless communication device, the decryption key permitting the mobile communication device to decrypt an encrypted data object issued to the mobile communication device from the key issuance system to obtain an unencrypted access control token, ACT, or a credential derived from the ACT, enabling the mobile communication device to present the ACT or the credential derived from the ACT to a reader positioned at or near the inner perimeter that is configured to assess a validity of the ACT or the credential derived from the ACT based on the presentation of the ACT or the credential derived from the ACT by the mobile communication device.