Edited: 12/24/2005 12:26:07 PM by WhyNotFab
www.x10.com
pretty affordable, but definitely not top of the line quality or anything.. different setups available though, so you could use a motion detector and a vcr commander to record, etc. If you already knew it was for sure one person from a group.. the cameras could easily let you recognize who. Just if it was a stranger, you wouldnt be able to identify them lol. check walmart/circuit city, etc first though.. for simple setups for monitoring kids and shit