| 摘要 |
A method and a system of exchanging coins, comprising determining an amount of coins to be dispensed in a sales transaction; transmitting the amount to a card reader terminal; retrieving account identification data from a card wherein the card stores account identification data; transmitting the amount and the account identification data to a central computer; redeeming, by an user at a later time, the amount less a fee in an user's preferred method.
|
