D2S is a time attendance device on a desk or counter. Fingerprints can be easily read at the top of the terminal, making the process of attendance record more convenient. With the high sensitivity sensor, BioID, speed and accuracy of verification will be enhanced,which helps deliver new user experiences. The stand-by time of the built-in removable battery is around 12 days; the number of times of punching the battery can support on a charge is 8,000.