A unitized smart card device with a partial fingerprint sensor, ergonomic guides and a processor is disclosed. The smart card contains secure memory, battery, and a processor to run the fingerprint sensor. The ergonomic guides help insure that the users finger properly swipes the fingerprint sensor. The smart card be used on a backwards compatible “dumb credit card” basis, or it may dock with an external smart card docking station. This docking station may act to facilitate communication between the smart card's fingerprint sensor and its onboard secure memory; and external computerized devices. The docking station itself may be configured with slots or other openings to allow users to access the smart card's fingerprint sensor while the smart card is docked with the docking station. The docking station itself may contain ergonomic guides to help ensure that the smart card's fingerprint sensor is used (swiped) in a correct manner.