Why Wrap Car Keys in Aluminum Foil: Does It Work?
People wrap car keys in aluminum foil to reduce the radio communication that enables some keyless-entry relay attacks. Aluminum foil can block a key fob when it forms a continuous, intact conductive enclosure, but foil is temporary and unreliable if seams, tears, or openings remain. A tested Faraday pouch is usually more practical. Key Facts […]