Android-based mobile payment service protected by 3-factor authentication and virtual private ad hoc networking

This work develops a pair of mobile payment devices, a counter reader and a paying client, on Android-based smartphone platforms for emerging mobile payment or electronic wallet services. These two devices featuring 3-factor authentication and virtual private Ad Hoc networking can make an easier and securer transaction than traditional credit cards or electronic payment cards. 3-factor authentication feature combines PIN code authentication, USIM card authentication, and facial biometric authentication. Especially, this work proposes and implements a simple but practical method, Fast Semi-3D Face Vertical Pose Recovery, to cope with the vertical pose variation issue bothering face recognition systems so far. Experimental results show the proposed method can significantly raise the recognition accuracy and enlarge the operating angle range of face recognition system under various vertical pose conditions. Besides, virtual private Ad Hoc networking feature based on OpenSSL and i-Jetty open-source libraries is also integrated seamlessly.