| 摘要 |
A gaming machine is associated with a point of sale device. A party engages in a purchase transaction, such as the purchase of goods or services from a merchant. The transaction is processed via the point of same device. Upon rendering payment, if the party is entitled to monetary change, the amount of the change may be transferred to the gaming machine. That transferred change is accepted as a wager at the gaming machine, which presents a wagering game offering a chance for winnings. Winnings may be paid via the point of sale device, such as in the form of money from a cash register.
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