| 摘要 |
A vending machine handles a purchase transaction by receiving a payment, receiving a product selection from the customer, and dispensing the product indicated by the product selection. As part of the same transaction, the vending machine offers an information item such as an audio recording or a video recording. The vending machine also receives from the customer a destination address, which may be an e-mail address. The vending machine or a system of which it is part transmits the information item to the received destination address.
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