Multi-modal techniques for identity theft prevention

The rapid growth of the Internet has caused a large number of social problems including invasion of privacy and violation of personal identity. Currently, it is an emerging trend to verify personal identity based on hybrid methods (for example, by combining the existing off-line and on-line verification methods) using the Internet in the legacy applications. As a result, many security problems of the Internet is now becoming the practical impacts on our social applications. In this paper, we study multi-modal techniques for preventing identity theft in the social applications from the practical perspectives. A digital signature techniques and multi-modal biometrics are exploited in our scheme without requiring users to hold additional hardware devices.