This application is part of Acoris work time accounting information system. It is a tool to register the start and the end of the work. Registration works in various ways: a user can scan NFC tag or QR code by using this app or scan NFC card in coworker's app, or the registration is done automatically by evaluating the coordinates of mobile phone. Acoris time attendance information system is flexible and easy to use. It includes the website, various reports, and alerts.