Appeal No. 96-1657
Application 07/819,345
data processing circuitry coupled to the battery;
a receiver adapted to receive messages, including radio
frequency paging messages, targeted to the apparatus, the
receiver having a power input coupled to the battery and a
data output coupled to the data processing circuitry;
a signaling device to alert a user of a received message,
the signaling device being coupled to the data processing
circuitry;
memory circuitry having stored therein authorization data
that is useful in operating the secure entry system, said
memory circuitry being coupled to the data processing
circuitry;
a communications interface adapted to transfer data
between the apparatus and the secure entry system so that the
lock mechanism may be activated, the communications interface
being coupled to the data processing circuitry; and
means for rendering the apparatus unable to activate the
lock mechanism unless the apparatus is provided, from time to
time, with new authorization data;
wherein the apparatus can serve both as a paging message
receiver and as an access device for a secure entry system.
17. A method of operating a secure entry system, the
secure entry system including an access control device that
has a radio receiver, processing circuitry, and a lock
mechanism associated therewith, the method comprising the
steps:
operating a cellular telephone to make a radio broadcast,
the radio broadcast including signal tones modulated thereon;
receiving said broadcast including signal tones;
providing data signals corresponding to the received
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