Biometric time and attendance systems use the fingerprints of employees to verify who is actually clocking in and clocking out of work each day. The system scans the finger of the employee, coordinates are determined and then the system maps the endpoints and intersections of the fingerprint. The main uses of biometric systems and devices are identification and authentication. Biometric devices are most commonly used in security, banking, mobile access and authentication, law enforcement, public transports, schools, home assistants, and building access