The FB page for my mother's area has a recent post from the local police force recommending keyless car fobs be kept in Faraday pouches to prevent car thieves from reading the signal and spoofing your car. The distance between car and fob needs to be more than 10 - 15 metres to prevent this and not many of us have houses that big.
My question is, how hard can it be to make a Faraday pouch given the correct type of screening fabric? I've had a look online but it seems that wireless communications is a subject surrounded by a thick web of consipiracy theory and associated woo (Faraday smocks for expectant mothers, anyone?).
Has anyone tried to make a pouch and, if so, what fabric did you use for the screen (any old scraps will do for the outer fabric/lining) and did it work?