Tinfoil bag foils shop security systems
This article on the register tells of an interesting twist in the world of shoplifters: Apparently they are getting hi-tech and using things like foil bags to protect their heist from the security devices.
They are now looking into countermeasures, so shops can detect shoplifters using tinfoil:
[countermeasures] in the form of a “special security system specifically designed to detect booster bags, tinfoil-lined jackets, metallic underware, and similar shoplifting devices”.
As the register article points out – tinfoil hat wearers beware!