Biometrics relies on the use of unique physical traits such as a fingerprint, a palm/iris pattern, or facial characteristics to identify an employee.
A non-biometric device such as an RFID device uses a proximity card to identify an employee. Buddy punching is a main concern here as the employee can ask his colleague to clock in with the card even when he is absent. Also, the employee may forget to bring his card to work and then he won’t be able to clock in/out the whole day. These issues won’t occur with a biometric device.
But, RFID is faster in identification when compared to biometric readers. RFID is also cheaper compared to Biometric devices.
Card reader(RFID) and Biometrics in the same device
Some devices support multiple identification mechanisms, such as Face, Fingerprint, RFID and Password identification all in the same device. With such a device, employees can use Face recognition while visitors can use proximity cards(RFID).