Faraday-shielded protection that stops relay-attack theft on Range Rover, BMW, Mercedes, Tesla, Lexus, Audi, Porsche. Blocks every key-fob frequency — 315/433/868/915 MHz LF plus 2.4 GHz Bluetooth phone-as-key. 76–85 dB attenuation across 30 MHz – 10 GHz.
A relay attack is a two-person theft technique that extends the radio signal between a parked car and the owner's key fob inside the house. Faraday shielding mathematically blocks that signal from leaving the bag. With the fob inside the REVIS-1, no signal escapes, no signal can be amplified, no signal can be relayed. The car cannot be relay-attacked because there is nothing to relay.
This is the only physical defense that works on every variant. Software updates from the manufacturer help; ultra-wideband ranging in newer fobs helps; parking inside a metal garage helps. But none of those are universal, and most luxury vehicles built before 2024 do not have UWB ranging at all. Faraday is the universal physical layer.
The REVIS-1 is verified against the LF wake-up frequencies used on Range Rover and Land Rover (the most-stolen vehicles in this category by absolute numbers), BMW M-series and X-line, Mercedes-Benz S-, G-, and AMG-line, Tesla Model S/X/3/Y, Lexus LX/LS/RX, Audi RS line, and Porsche Cayenne/Panamera/Taycan. Same Faraday principle covers Bluetooth-Low-Energy phone-as-key implementations (Tesla, BMW Digital Key, Apple CarKey).
Thief A walks to the front door with a battery-powered LF amplifier (cost: ~$150 from electronics suppliers). The fob inside the house is constantly listening for the car's wake-up signal.
Thief B stands at the car and pulls the door handle. The car emits its LF wake-up signal. Thief A's amplifier captures that signal at the door, retransmits it inside to the fob, captures the fob's response, retransmits it back to the car.
From the car's perspective, the genuine fob is right there. Door unlocks. Engine starts. Thief B drives away. Thief A walks to a second car parked nearby and follows.
Average detection time on relay theft: 6–8 hours, because the attack happens at 2–4 a.m. and there is no audible alarm. By the time the owner reports the theft, the vehicle is in a chop shop or on a container ship.
Walk through the door, drop keys + phone + wallet into the REVIS-1. The bag stays at the entryway. Relay attack cannot complete because the LF signal does not exit the bag. Pick the bag back up in the morning. This is how 70%+ of repeat buyers describe their daily use.
For business travel and weekend trips, the bag is the briefcase. Phone, MacBook, key fob, RFID wallet — all in three independent chambers. Boardroom-appropriate optics. Cabin-carry friendly. Doubles as an executive briefcase that nobody mistakes for a security product.
EP details, single-family offices, and HNW principal-protection programs standardize the REVIS-1 as the default carry. Custom-branded Velcro patches identify the principal or detail without naming the manufacturer. Bulk pricing from 10 units. Start a quote.
Some U.S. and UK insurers have begun denying or reducing claims on relay-attack theft when the owner cannot demonstrate reasonable signal-blocking storage. This is not yet universal — but the trend line is one direction, particularly on policies covering Range Rover, BMW M-series, AMG-line Mercedes, and Tesla.
Faraday storage is increasingly the documented standard of care. The argument from the insurer's side is straightforward: the threat is well-known, the defense is widely available, the cost ($129) is trivial relative to the asset value, and a buyer who has not deployed the defense has accepted a risk the insurer should not be asked to underwrite.
"Our underwriting questionnaire on Range Rover-line policies now includes a question about Faraday key storage. We are not yet declining policies on the answer, but we are pricing it." — Underwriter, U.S. high-value-vehicle insurer (off the record, 2026 industry briefing)
For HNW principals and family offices managing fleet portfolios, the documentation argument scales. A standardized REVIS-1 deployment across principal, family members, and core staff provides a paper-trail answer to the insurer's question for every covered vehicle in one purchase.
Three independently shielded chambers. 76–85 dB. Verified against every major brand's key-fob frequencies. $129. Free U.S. shipping. 30-day money-back guarantee.
Acquire Your Executive Guard — $129