This paper is concerned to show how a mobile phone equipped with Near Field Communication (NFC) can be used to
construct a Single Sign-On authentication system (Celikkan & Gelis, 2014, August). When logging in to numerous online sites,
customers no longer have to juggle a plethora of usernames and passwords to keep track of. As omnipresent computing devices,
smartphones are utilised for a wide range of functions, from authentication to tracking to medical care to entertainment and epayment.
