Faraday Bag, Wisdompro RFID Signal Blocking Bag Shielding Pouch Wallet Case for Cell Phone Privacy Protection and Car Key FOB (Black) Protects chip technology "smart-cards" from hackers' RFID readers in the range of 10 MHz - 3 GHz Convenient and portable - inner silver layer blocks signals, outer Oxford cloth black layer can be used as a normal case - a modern and fashionable design Block Cell Phone Signal - If you don't want to answer the phone, you can put the phone in the silver layer pocket of the bag and close it, then the phone will be disconnected; this bag can also block Cell Phone GPS Signal to prevent tracking, protect your privacy Block Car-key FOB Signal - Keep your car's security system from getting hacked Compatible Size: 7-1/2" x 3-1/2" (19 x 8.9 cm) - Fits Car-key FOB, Smart Phones like Apple iPhone Xs, iPhone Xs Max, iPhone XR, iPhone X, iPhone 8, iPhone 8 Plus, iPhone 7, iPhone 7 Plus, iPhone 6/6s, iPhone 6 Plus/6s Plus, iPhone 5/5s/5c, iPhone SE; Samsung Galaxy S7/S7Edge, Galaxy S6/6 Edge, Galaxy S5, Galaxy S4, Galaxy Note 5, Note 4,Note 3; HTC One, One 2 (M8); Motorola Droid; LG Optimus and More (with or without slim case) Protects chip technology &#034;smart-cards&#034; from hackers&#039; RFID readers in the range of 10 MHz - 3 GHz Block Cell Phone Signal - If you don&#039;t want to answer the phone, you can put the phone in the silver layer pocket of the bag and close it, then the phone will be disconnected; this bag can also block Cell Phone GPS Signal to prevent tracking, protect your privacy Block Car-key FOB Signal - Keep your car&#039;s security system from getting hacked Outer Oxford cloth black layer can be used as a normal case for cash and manual keys