Access Control and Management System Based on NFC-Technology by the Use of Smart Phones as Keys

In today's world, we always carry all sorts of keys (house keys, garage keys, office keys, car keys) and/or pass cards. Furthermore, we keep all of them in our pockets or wallets; they occupy a lot of space and weigh a lot. In addition to this, we carry gadgets (smart phones, tablets, smart watches, etc.) which are essential in today's life. After thinking all this, authors came up to the idea of replacing usual keys by smartphones to use for opening/closing and locking/unlocking doors. Smartphones have already been used as payment smart cards. Most of the modern mobile devices are equipped with NFC module and by using such devices, it is possible to get rid of carrying heavy, metal keys, pass-cards, etc. People often forget keys at home and they are relatively small and easy to lose. Instead of carrying all these keys, authors of this research paper present an NFC-enabled Access Control and Management System, which by the help of mobile devices, NFC technology and HCE mode, introduced in Android 4.4, makes possible for people to use only one single key. To emulate a smart card and the data exchange between the mobile device and NFC-reader, ISO 7816-4 smart card standard is used.