System and method employing portable cards to monitor a commercial system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Nov 13, 2001
Grant Date -
N/A
app pub date -
Apr 29, 1999
filing date -
Apr 29, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system and method employing portable cards, carried by consumers, to monitor a commercial system. In one exemplary embodiment, when a consumer uses a card at a vending machine, the vending machine may write data, reflecting a condition of the vending machine, onto the card. Subsequently, when the consumer uses the card at another machine, the other machine may read the condition data from the card.
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