Patent ID: 8707414

Claim:
An access control device for operation in an access control system including a central server, one or more disconnected access control devices, and one or more connected access control devices, the device including: an interface for interacting with an access control token for the purposes of an access transaction; a processor and associated memory configured for processing data received from the access control token in relation to the access transaction thereby to selectively allow or deny access; a receiver for determining geographical positional information for the access transaction; wherein when the access control device is operating as a disconnected access control device, the access control device is configured to: in respect of a first access transaction initiated by a first access control token at a first location, write to the first access control token a first set of data indicative of geographical positional information representing the first location; in respect of a second access transaction initiated by the first access control token at a second location, write to the first access control token a second set of data indicative of geographical positional information representing the second location; and wherein the first set of data and second set of data are configured to subsequently be read from the access control token by a connected access control device, thereby to facilitate propagation of the first set of data and second set of data to the central server, such that the central server calculates transportation information for a user associated with the first access control token based upon the geographical positional information representing the first location and geographical positional information representing the second location.