Patent ID: 7596850

Claim:
A method for temporarily inactivating a wireless communication device which sends and receives an electromagnetic communication signal, said method comprising enclosing said device in a container and locking said container with a seal which prevents removal of said device from said container, said container comprising a signal shielding layer wherein said signal shielding layer comprises an electrically conductive layer or a microwave absorptive layer, said signal shielding layer being configured to surround said device when said device is enclosed within said container to thereby attenuate said communication signal and render said device inoperable; said seal being adapted so that breakage of said seal to unlock said container can be visually detected; wherein said container is a heat sealable plastic bag; said signal shielding layer is coated or laminated onto said bag; and said bag is locked by heat sealing a heat sealable portion of said bag whereby said heat sealing seals said device in said bag.