Secure PIN Entry
Original Publication Date: 1988-Aug-01
Included in the Prior Art Database: 2005-Feb-15
In self-service terminals, e.g., for banking, point-of-sale-and-money dispensing applications, a personal identification number (PIN) is entered by the user. It is extremely important to enter the PIN such that nobody is capable of detecting somebody else's PIN. For secure PIN entry, a one-digit display, a run key and an enter key are provided. The one-digit display is positioned such that the one-character or one-number display is so deep inside the display box that it is indiscernible for another person standing at a distance. The roll or run key is actuated by the user until the first digit of the PIN is displayed by the one-digit display in the digit display box. Then, the enter key is pressed. The run key is reactuated until the second digit of the PIN is displayed.