1. A system, comprising: a keypad; a card reader; and a controller configured to: transition the system between a high security mode, in which the card reader is enabled to read a customer payment card and in which the keypad is enabled to accept manual input of unsecure information from a customer in relation to a retail transaction and to accept manual input of secure information from the customer in relation to the retail transaction, and a low security mode of operation, in which the card reader is enabled to read a customer payment card and in which the keypad is enabled to accept the manual input of unsecure information and is disabled from accepting the manual input of the secure information, determine when security of the system has been breached, and transition the system from the high security mode to the low security mode in response to determining that the security of the system has been breached.