My question is about remote controls. A remote control uses infrared or radio. If I have a TV VCR taping activity at the drug house, they have a remote control which they use to stop my recording every time I leave. I only get 30 minutes of tape instead of 8. What do I need to do to protect my VCR from long range remote changes? Put it in a metal box? On all sides, even the bottom? My question really is about what material will block infrared communication and/or radio frequency communication between electronic equipment. I'm trying to get the ghouls on tape climbing the fence or opening the door. Any suggestions?