Fingerprint/ Card based Attendance System with Optical Sensor Shows regular attendance of the employees without making any mistakes. The Attendance System with Optical Sensor is an ideal tool for premises where large numbers of employees or workers work together such as workshops, mills, manufacturing factories, etc. The Fingerprint/ Card based Attendance System with Optical Sensor is based on fingerprint/ card. The Fingerprint/ Card based Attendance System with Optical Sensor can hold up to fifty thousand transactions and more as per the requirement