Even back home with my key is really strange when you open the door, just ready to call and ask my mother, mother to open the door, my mother told me that she is home door for time attendance security door is safer today, after the door does not need to use the key, I asked my mother how does she know that time attendance security door, said the last time she went to her mother is a classmate to play at home to see the students home to install the door I feel very good, listen to the mother story, I’ll tell mother as long as the mother love is good, and now this lock is very popular, especially safety, I don’t need to go out with the key, but also very convenient.