In magnetic tape cards, an ID number is determined for each user, so that the user ID number is identified to the system and the necessary operations can be easily provided through the system. The user ID number is encrypted on a magnetic stripe on the back surface of the pvc card.This system is widely used in automatic cash dispensers and POS terminals.The use of magnetic tape cards has an unlimited business area. Supermarkets, cafeterias, shopping malls, associations requiring membership etc. In most places such as magnetic tape card is preferred.