Abstract :
User authentication is a core building block of any secure collaborative computing system. And, because of the enhanced interaction between mobile applications and Web ser vices, mobile device user authentication is even more frequent.
Keywords :
Web services; authorisation; groupware; mobile computing; Web service; core building block; mobile application; mobile device user authentication; mobile two factor authentication; secure collaborative computing system; Authentication; Browsers; Identity management systems; Mobile communication; Mobile handsets; Servers; PINs; computer security; mobile authentication; mobile computing; mobile phones; offline PINs; online PINs; passwords; two-factor authentication;