THIEF PROTECTION: The perfect protection for car keys and electronic key fobs against radio frequency theft. Signal blocking capabilities include Wi-Fi / GSM / LTE / NFC / RF and Bluetooth. SAFE & SECURE: Once the device is inside the pouch no signal can penetrate from the outside or be emitted from the inside. MULTI USE: Perfect for mobile phones, smart automobile key fobs, building access key fobs, security/access cards, smart watches, thumb-drives, Wi-Fi cards, garage remote and many smaller electronic devices. ONE SIZE FITS ALL: Small enough to be stored in your pocket when out and about for maximum security. PIECE OF MIND: We hope you’ll never need it, but by using this you will never have to worry about your signal being hacked and possessions stolen.