The problem with Faraday cages (or bags) for wireless car qkeys is that the key in question will usually ramp up the receiver and transmission power, if it can'

The problem with Faraday cages (or bags) for wireless car qkeys is that the key in question will usually ramp up the receiver and transmission power, if it can't hear the car. Thus, you will rapidly burn through your battery, even if you do manage to keep your keys secure in the Faraday cage/bag. Then there's the problem of forgetting your keys and not being able to find them. We need to have a switch on the remote so that we can just turn it off, until such time as we want to turn it on again.