| 摘要 |
A payment terminal 100 comprises a contactless payment transceiver 103; a display 104; and user input apparatus comprising a select input, an increase input and a decrease input. The payment terminal is configured to: display an initial numerical value; respond to detecting user operation of the increase or decrease input by incrementing or decrementing the numerical value displayed on the display; respond to detection of the select input by setting a transaction amount corresponding to the numerical value displayed on the display at the time of detection the select input; and use the contactless payment transceiver to initiate execution of a transaction for the transaction amount with a contactless payment token. The user input apparatus may comprise an aspect 101, such as a dial or knob, that can be moved by a user to positions either side of a zero position and is mechanically biased to the zero position, and the payment terminal is configured to control the rate of incrementing and decrementing the numerical value depending on a detected amount of deflection of the aspect from the zero position. |
