Anti-theft Faraday Box for Car Keys and Phone Hurtel 20×11 cm — Radio Wave Blocking Case

Hurtel Anti-theft Faraday Box for Car Keys and Phone (20×11 cm) is a radio-wave blocking case designed to reduce the risk of relay attacks, unauthorized tracking and remote unlocking of keyless-entry vehicles. The pouch uses conductive shielding to create a Faraday cage effect around stored items, interrupting incoming and outgoing radio signals for car key fobs, smartphones and other small electronic devices. Its compact rectangular dimensions make it suitable for home storage, vehicle glove compartments or travel bags when temporary signal isolation is needed.

Advantages

The Hurtel Faraday Box provides passive protection without batteries or software, relying on physical shielding to block radio-frequency communication. Its 20×11 cm size accommodates most modern car key fobs and many smartphones while remaining compact for everyday use. The durable outer layer and internal shielding materials are designed for repeated opening and closing and for placement in common storage locations such as drawers, consoles and luggage. The pouch helps preserve privacy by preventing signal-based tracking and reduces the risk of vehicle theft via relay amplification.

Suitable for

• Storing car key fobs to prevent relay theft of keyless-entry vehicles
• Keeping smartphones isolated from incoming calls, messages and tracking while charging or not in use
• Securing small electronic devices that use Bluetooth, NFC or RFID signals during travel or overnight storage
• Use in home, vehicle glove compartment, hotel rooms or carry-on luggage for added signal privacy

Key specifications

• External dimensions: approximately 20 × 11 cm
• Internal conductive shielding for radio-frequency attenuation
• Suitable for car key fobs, smartphones and small electronic devices
• Compact rectangular pouch design for drawer, console or bag storage
• Passive, battery-free operation

How to use

Place the device you want to isolate—such as a car key fob or smartphone—inside the Hurtel Faraday Box and fully close the pouch according to the closure mechanism. Ensure the pouch is fully sealed before storing it in a drawer, glove compartment or bag; when closed correctly the shielding interrupts radio-frequency communication and prevents incoming or outgoing signals. Remove items from the pouch when you need to use them and reinsert them when you require signal isolation again.

Usage recommendations

For optimal protection, store all vehicle key fobs inside the Faraday Box when not in use and keep the pouch in an interior location away from windows. Do not expect absolute immunity from every type of signal; position and closure quality affect performance. Avoid placing devices that need network connectivity or emergency accessibility inside the pouch while in active use.