Shlisel, who also worked for the Israeli Air Force developing missile defense systems, explains that the function of aluminum foil is to create a cell that prevents electromagnetic waves from being recorded by someone else.
“More and more thefts”
Many might find it archaic that, in the 21st century, we have to worry about wrapping car keys in aluminum foil.
To which he adds: “The automotive industry is fully aware of these problems and is looking for ways to make it impossible for anyone to replicate the communication between a key and a vehicle.”