| 摘要 |
A transaction system comprises a LAN incorporating a plurality of transaction units and a server. The server can cause the transaction units to perform operations, such as revaluations, on respective, predetermined smart cards inserted into the transaction units in response to instructions received externally, for example via the internet. The unit server stores a database, accessible via the internet, including the credit values stored by the data-carrying devices. The information is reconciled each time a device is inserted in the transaction unit. Revaluation can take place in a progressive, timed manner.
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