| 摘要 |
A method for a point of sale terminal, including reading a first PIN code that is stored in an RFID chip that is embedded in a plastic card, identifying a first keypad character on a touch sensitive display screen that is being tapped by the plastic card, reading a second PIN code that is stored in an RFID chip that is embedded in a plastic card, identifying a second keypad character on a touch sensitive display screen that is being tapped by the plastic card, determining whether the second PIN code matches the first PIN code, and if the determining is affirmative, then appending the second keypad character to the first keypad character to generate a two-character input code, else starting a new one-character input code with the second keypad character alone. |
