Contactless proximity automated data collection system and metho

Details Contactless proximity automated data collection system and metho Contactless proximity automated data collection system and metho

1997-04-01

2000-01-04

Lee, Michael G.

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Conductive

235382, G06K 1906

Patent

active

060100745

ABSTRACT:
A collision resolution system and method for enhanced non-contact automated data collection. The data collection system generally includes a plurality of portable fare tags or token ("smart") cards and a stationary target terminal. Each tag exchanges a series of messages with the target terminal to establish a communication link for the transfer of financial or other data. Concurrently, each tag and the target terminal process the messages to provide collision resolution, thereby ensuring that only one tag, at any instance, establishes the communication link with the target.

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