Mengshen Key Fob Signal Blocking Bag Pouch, Faraday Bag Cage RFID Signal Blocking, Anti-hacking Car Key Protector for Wireless Car Keys, Keyless Entry - (Pack of 3), PX01 Prevent electronic information from leakage Anti degaussing. The pouch can protect the data information stored in the memory card and any electronic products with storage medium in it. Anti-static, reducing disturbing influence on memory contents by electromagnetic field, preventing loss of data. Put the bank card in the pouch to prevent it from degaussing. Anti electromagnetic radiation. The pouch has two pockets. When the cell phone is placed in the back silver pocket, all signals will be blocked. If the phone is placed in the front pocket, the radiation from the phone will be reduced. Swift response, reliable function, with the phone in the pouch for 30 seconds, all signals will be blocked.