QRP: An improved secure authentication method using QR codes
David Pintor Maestre · 2012
It seems quite obvious that any online service that aims to be secure nowadays should seriously consider implementing a strong authentication method. This paper presents the design and implementation of QRP, an open source, proof-of-concept authentication system that uses a two-factor authentication by combining a password and a camera-equipped mobile phone, acting as an authentication token. QRP is extremely secure as all the sensitive information stored and transmitted is encrypted, but it is also an easy to use and cost-efficient solution. QRP is portable and can be used securely in untrusted computers. Finally, QRP is able to successfully authenticate even when the phone is offline.