1. A system, comprising: a card reader; a keypad; a processor configured to encrypt data manually input to the keypad and to encrypt information read by the card reader; and a controller configured to transition the system between a high security mode and a low security mode, 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; wherein in the high security mode the card reader is enabled to read a customer card, the keypad is enabled to accept manual input of unsecure information and to accept manual input of secure information, the controller is enabled to receive the encrypted data and the encrypted information, and the controller is enabled to process a retail transaction using the encrypted data and the encrypted information; and wherein in the low security mode the card reader is enabled to read a customer card, the keypad is enabled to accept manual input of unsecure information and is disabled from accepting the manual input of secure information, the controller is enabled to receive the encrypted data and the encrypted information, and the controller is enabled to process a retail transaction using the encrypted data and the encrypted information.