Cell Phone Anti-tracking Anti-spying GPS Rfid Signal Blocker Pouch Case Bag Handset Function Bag (Beige) High quality and perfect design, can be used as a wallet at the same time Prevent people from being tracked with this bag, protect your privacy If you don't want to answer the phone, you can put the phone in the bag, then the phone will tell "calls can not be connected." Put magnetism card such as ID card, bank cards into the bag, it can aviod magnetism lost and information leaking Anti-radiation, anti-degaussing, anti-signal. Be sure to put the phone in the back pocket, not the front one, shut the bag closely,then the signal will be blocked