| 摘要 |
A method for operating a signal receiver which authorizes controlled access, comprising providing an authentication token device having a predetermined usage limit stored therein, providing a reading device for reading the authentication token device, and for implementing the predetermined usage limit while deauthorizing the authentication token device for use with other reading devices, comprising a signal generator for communicating with a signal receiver through a wireless transmission, receiving the wireless transmission at the signal receiver, to permit access based on the received transmission, and upon exceeding the predetermined usage limit, deauthorizing further access.
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