We look for a long time, our company now this system has a problem, then I would say to our company or we change the time attendance security door to try it, this will give us the human resources department to save a lot of time, because every time to the end of the month when we calculate wages. It is also very hard, because do not know if you have to work here, and when we give the company recommended to install time attendance security door, we are more relaxed, because we can use the time attendance security door knows everyone in the current month to work here, it is really convenient. My door of course we are very very love.