Whether you're hunting for jobs at work, or taking some "alone time", the Wi-Spy wireless surveillance system can avoid anyone sneaking up on you. It's also good for stuff that matters, like keeping an eye on your kid's safety.
The $170 system consists of two parts: a rechargeable wireless camera about the size of a pack of cigarettes, and a 2.75-inch wireless receiver/display. Mount the camera, plug-in the monitor up to 30 feet away, and watch the live stream.
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Apparently, the camera also has nightvision capabilities (or at the very least works in low-light situations), and can record video to an SD card, which can you then copy over to your computer. [Brick House Security via Gearfuse]