This gadget seems like it might be aimed more at people who secure buildings for a living, but if you're security concious about the home (maybe you're like Johnny Smith in The Dead Zone), this might be a product to check out: digital security camera, hooked into a network by 802.11g WiFi, with a low-light level sensor that switches the camera over to black and white from color, a microphone to monitor noises, a motion detector and a frame-rate of 30 fps at the camera's top resolution of 640x400. Stick a few of these around your house, set up your routers in your control room and cackle merrily as visitors (invited or not) try and find their way around. You can read the review here.