Communication method and device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 4, 2000
Issued Date -
N/A
app pub date -
Aug 10, 1998
filing date -
Dec 13, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system (100) and method of improving activation security allows a remote device (104) to identify that there is a difference between a first signal transmitted by a central site (102) and a first signal received by the remote device. A derived number is used. The derived number can be displayed to the user for verbal verification by the user, or the derived number can be used internally of the remote device, or the central site, for verification that is transparent to the user. A significant amount of security is added without substantially altering the communication protocol.
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