How does aluminum foil block store sensors?

Answer 1

the sensor works on a magnetism system. The trigger is caused when a security tag is passed through between the sensors. The foil block's the signal from the tag being picked up. However, retailers are very aware of this and are now monitoring what customers do when they have tagged items in their possession. Police are now using part of the Theft act that says a person is going equipped to committee a crime (using/carrying the foil in a situation that the foil would not normally be used in)