Special cards with high data capacity. Akin to pen-drives of the twenty-first century, having half the size of a credit card of the same era.
Two type of Data-Cards are in use, one for general data which is encrypted with authenticity-algorithms to trace the owner and/or issuer back, the other is highly encrypted and is used exclusively for monetary transactions. The latter is similar to the twenty-first century prepaid credit cards.
Appears first in: A02 ~ The rebirth of the Phoenix II
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