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· Administrator
2002 F55 STS, 2014 Explorer XLT, F-150
80,443 Posts
A Faraday pouch can't hurt - and it will also block the fob from communicating with the car until you want it to. The fob is the transmitter; the car is the receiver (thus the button battery in the fob).

I use them - the foil lined Tyvek ones - for all my various "credit" and gasoline cards and we have proven that they prevent unwanted card scanning.

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