Is duct tape able to block cellphone radio frequency?

Aluminium foil, or aluminium tape, aka “flashing tape” is what you need. If you're happy with lousy blocking, because it won't be very good. A metal trash container is a better idea already. Or a cookie tin. Still not very good though. read more

Aluminium foil, or aluminium tape, aka “flashing tape” is what you need. If you're happy with lousy blocking, because it won't be very good. A metal trash container is a better idea already. read more

If you are worried about people covertly reading ID information, line your wallet with a layer of foil to block signals from the RFID chip in your identification card. Put any object containing an RFID chip inside a container made of metal or any other conductive material. read more