In my School, Raising Star Montessori School. Staffs had a habit of perpetual lateness. Pondering on how to stop/reduce these. I got introduced to a system of Card to tap in whenever any staff comes at the gate. These system was introduced by Isaac Chigozie a good friend of mine who works at IDSC (Integrated Data Capture Solutions Ltd) who is the developer there. I have since been thanking for the Idea.