It Is the best way to take attendance in any organisation which saves the time and also is trust worthy,from existing technology it is time reducing and easy to use.It is also cheaper and effective.
It was challenging to take attendance on every day basis and have only one entry every day(avoiding multiple entries).We solve the problem of multiple entries but it created another challenge of taking attendance on another day,so we got the idea after a long discussion about the possiblities and came on conclusion with great and effective strat.
Discussion