Startup Idea : arduino automatic sliding glass door usin RFID

My idea is that we combine Arduino with a automatic sliding glass door sensor + a RFID card reader to open the door. This idea is strongly recommended for teachers so that once the teacher tapped their card onto the RFID card reader the door will open and after the students enter the door will close. Then if other late student come the automatic glass door sensor will detect their motion and open when they want to enter the class. So the teacher will don't have to stop their lessons to open the door for the incoming late students.