Webcams are useful for doing Hangouts or video chats. But you can do more with them. The right webcam can be used to perform surveillance. Wowwee Rovi happens to be a robotic webcam with WiFi. It has a built-in microphone and a speaker. It streams audio and video to your PC. ROVIO can navigate around your home based on its stored location points.
This is not the perfect webcam for surveillance but it does work. Not cheap though.
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