Your Car Won't Start
Without You.
CAN Shield sends digital kill commands directly to your car's ECU via the CAN bus. Thieves won't see it, find it, or bypass it — even with a relay attack.
Thieves steal keyless cars in under 60 seconds
Relay attacks amplify your key fob signal from inside your house. Two people with €200 of equipment can unlock and drive away your car while you sleep.
Signal amplified
Thief A stands near your front door to capture your key fob signal through the wall.
Signal relayed
Thief B stands near your car holding a relay device that mirrors the amplified signal.
Car unlocks & starts
Your car thinks you're standing next to it. It unlocks, starts, and drives away — in under 60 seconds.
Traditional security does nothing.
Steering wheel locks, RFID-blocking pouches, and even OEM alarms don't stop relay attacks. The only solution is to break the digital communication chain — inside the car.
How CAN Shield protects your vehicle
Connected directly to your car's CAN bus network — the same system that controls every function in your vehicle.
Installed in minutes
Your workshop wires CAN Shield directly into your vehicle's wiring harness — hidden inside the dashboard. No wires visible.
Monitors the bus
Continuously listens to CAN bus traffic. The moment an unauthorized start attempt is detected, it acts.
Sends kill commands
Sends targeted digital commands to your ECU/BCM to block engine start, gear changes, or movement.
You disarm it
Walk up with your phone (auto-BLE), a small transmitter, or enter your PIN via existing car buttons.
Everything included, nothing visible
CAN Bus Blocking
Digital kill commands sent directly to ECU & BCM — no relay attack can overcome it.
BLE Auto-Disarm
Walk up to your car with your phone in your pocket — it disarms automatically. Hands-free.
Hidden PIN Code
No extra buttons installed. Enter your secret PIN using your existing steering wheel or dash controls.
GPS/GSM Integration
Connect your external GPS tracker. Remotely lock or override the immobilizer via the cloud.
EV & Motorcycle Ready
Works on electric vehicles and motorcycles — not just traditional ICE cars. Broader than most competitors.
Zero RF Emissions
Completely silent and invisible when armed. No scanner can detect its presence.
Four layers of digital protection
Depending on your vehicle model, one or more modes are activated.
Block Engine Start
The engine simply cannot be cranked. Thieves press the start button to nothing.
Engine Shutdown on Drive
Engine starts, but cuts out the moment the thief selects a gear or presses the clutch.
Prevent Vehicle Movement
Engine runs but the vehicle cannot move. Wheels are locked digitally at the drivetrain level.
Block Ignition Entirely
Ignition cannot switch on at all — the car appears completely dead to anyone attempting theft.
Three ways to disarm — all invisible
Smartphone App
Run the app in the background. CAN Shield detects your phone via BLE as you approach — fully automatic.
BLE Transmitter
A small keyring transmitter emits a secure BLE signal. Keep it in your pocket — the car disarms as you approach.
PIN via Car Buttons
Tap your secret code using your steering wheel controls or dashboard buttons. No extra hardware installed.
What owners say
"My BMW was stolen twice in 3 years using relay attacks. After CAN Shield, I sleep easy. The BLE auto-disarm is seamless — I don't even think about it."
"I was skeptical an aftermarket device would work on my Tesla. The installer showed me it blocking a test start attempt live in the workshop. I was sold immediately."
"PIN entry through the steering wheel buttons is genius. My wife uses the app, I use the transmitter. Nobody knows it's even there."
Find out if CAN Shield protects your car
Answer 5 quick questions about your vehicle. We'll tell you exactly which protection modes work for your model and how to get it installed.
Takes 2 minutes · No registration required