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> Just a thought, but what about the "Blue" credit/debit cards that
> supposedly have an ID chip in them? Those can't be too costly, and the way
> they would have to give out info to be of any use would be useful for the
> other applications we've discussed as well.
The chip is just a tiny EEPROM device that's only used for storing less than
1kB of data.. Nothing special. The card probably costs around $5 to make.
--
-- Igor
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