Sensor's Bio-Flex fingerprint reader provides unrivalled security and positive identity verification, without compromising user-convenience. It's dual factor solution combines a self-contained fingerprint module and a proximity reader in one modern package. The Bio-Flex is ideal for retrofits, and can add a biometric layer of security to an existing external Wiegand reader or keypad. This self-contained fingerprint reader provides an optimum security enhancement without the need to re-issue cards or replacing existing readers.