An Auto door is the most convenient thing to be a part of a building. Usually, these are installed in shopping malls, supermarkets, restaurants and universities etc. They prevent a lot of problems with opening doors like physical contact, physical force, busy hands etc. Auto doors are convenient for everyone regardless of their age and gender but especially for children, old and disabled persons. Auto doors are smart doors that take less space because they slide in their little place and also look nice. Moreover, they help save energy as they keep the room temperature or the temperature of a building stable because they do not let extra heat or cooling outside or inside because of the doors being left open. They automatically close shut even if someone forgets to close the door behind them.