Patent ID: 7222788

Claim:
A method for registering tickets for the purpose of establishing a service which is purchased and/or a defined presence, wherein at least one first send unit on a first frequency band and one send/receive unit on a second frequency band for communicating with tickets are provided in a detection zone, and wherein the detection zone is assigned at least one entry zone via which the detection zone can be entered and exited, comprising: receiving in a ticket passing into the entry zone a first information unit via a first receive module in the ticket from the first send unit on the first frequency band, the first information unit containing an identity which is assigned to the detection zones, the first information unit being stored on the ticket after receipt; receiving a wake-up signal on the first frequency band by a second receive module in the ticket when situated in the detection zone at a time point which is determined by the beginning of the service that is to be purchased and/or of the defined presence; and intermittently activating a send/receive module in the ticket in response to the wake-up signal to initiate a bidirectional communication between the send/receive unit and the send/receive module by telegrams in the second frequency band to register the relevant presence of the ticket in the detection zone at least once.