Two-dimensional data symbol processing system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jul 25, 2000
Grant Date -
N/A
app pub date -
Jan 23, 1998
filing date -
Jan 24, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A first and a second two-dimensional data symbols are printed on a prepaid card. Once the prepaid card is used repeatedly and an operational parameter data of the prepaid card reaches '0', a hole is pierced in the second two-dimensional data symbol. It is determined that the prepaid card is redundant, when the hole is pierced in the second two-dimensional data symbol.
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