Check the listing for details. Keyless Car Key Signal Blocker Box / Faraday RFID Blocking/ Shielding Anti Theft. Condition: New. Listed at 16.41 USD. Keyless Car Key Signal Blocker Box Faraday Safety Blocking Pouch Anti-theft.Features: - This car key box works like a faraday bag to prevent criminals from using keyfob skimming tools to copy or mimic your keyfob's unique signal/ wireless code to gain access to your vehicle or keyless entry system. - This car key safe box can hold 4 car keys, so can be used for all family members's car keys and/ or spares.- Bocks signals 100% with double layer carbon fiber PU material which guarantees signal isolation. - The keyfob faraday box prevents your car's security system from getting hacked. Protects your personal and financial data by blocking RFID scanners & readers from detecting your cards' RFID signals. This car key signal blocker box is a MUST for your car's protection.Specification: Suitable: suitable for all models Key box Size: 11.6 x 9x 5.8 cm Color: Black Weight: 233.8g