If you are in the market for a good covert, portable digital video security camera system, you should consider a keychain spy camera. They are small, light weight, and virtually undetectable. Not only do they record video, but they also record audio as well.
Probably the most single important factor behind covert monitoring and recording is the camera being hidden in an object that is so common that it would never be suspected. Such is the case with Security Camera King’s Product# HC-CARKY. (It’s safe to say that some of the covert advantage with this product may be lost if you don’t drive a vehicle.)