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The advance of wireless technology, smart sensors, and cloud computing have changed the government's approach to security in the face of 9-11 and global terrorism. The Internet is being used in ways we could not have imaged a decade ago. This powerpoint explores issues of surveillence, privacy, and evovling law in the context of world events.

A sophisticated new camera system can detect lies just by watching our faces as we talk, experts say. The computerised system uses a simple video camera, a high-resolution thermal imaging sensor and a suite of algorithms. Researchers say the system could be a powerful aid to security services.