The present invention relates to an attendance management device, system and method, wherein a user's attendance, leaving, or cancellation signal is received through a single button, and depending on the number of times the button is pressed or the time the button is pressed, the a button input receiving unit for discriminating whether it is a cancel signal; a GPS module for receiving the location information of the device when the signal is received; and a wireless communication unit for transmitting the ID of the user, the divided signal, the time at which the signal is received, and the received location information to a server. According to the present invention, by providing a portable device capable of managing commuting with one button, a system including the device, and a method for managing commuting using the system, it is possible to conveniently manage commuting even when away from work. can have an effect.
展开▼
