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One payment and your ready to protect!!
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Free Nationwide Installation
We come to you, home, work or even a dealership
Invisible Protection
Only way to start your car is to enter a code on the steering wheel
Stop Relay Attacks and Key Cloning
Protect your vehcile against the growing threat
Car Immobilisers Built on Advanced CAN Bus Technology
Looking for the best car immobiliser to protect a modern keyless vehicle? The Casper is a ghost-style car immobiliser that delivers a level of security your factory alarm can't match, because it works inside your vehicle's electronics rather than bolted on to the outside of them.
The Casper connects directly to your vehicle's CAN bus, communicating with the ECU and the onboard systems already built into your car. There are no cut wires, no aftermarket boxes on show and no extra key fob to lose or clone. Instead, the device sits silently in the background, and your engine will not start until the correct PIN sequence is entered using buttons you already have — on the steering wheel, dashboard or door panels.
Because there are no visible signs that an immobiliser for your car has been fitted, there's nothing for a thief to look for and nothing to give the game away. A stolen key, a cloned transponder or a relayed signal all become far less useful when the car still refuses to move.
Read our blog on The Rise of Car Theft to see how vehicle crime is changing and what you can do about it.
A Car Immobiliser That Stops Relay Attacks and Keyless Car Theft
A relay attack is one of the fastest and most common ways keyless-entry vehicles are stolen today. Two criminals work together: one stands near your home with a device that picks up the signal from your key fob, while the other stands by your car with a device that relays that signal across. The car believes the key is present, unlocks and starts — often in under a minute, with your keys still sitting on the hallway table.
Relay theft isn't the only method. Thieves also use signal jammers to stop your car locking, and OBD port devices to programme a blank key in seconds. What all of these have in common is that they defeat the vehicle's factory security by imitating a genuine key.
The Casper closes that gap. Even if a thief relays your key signal, jams your fob or codes a new key through the OBD port, your car immobiliser prevents the vehicle from being driven away without the correct PIN sequence. Faraday pouches and steering wheel locks help, but they rely on you remembering to use them every single time — the Casper arms itself automatically, every time you switch off.
Free Car Immobiliser Fitting Anywhere in the UK
At GPSBob, we think car immobiliser fitting should be simple and stress-free — so we include free professional installation with every Casper, anywhere in the UK.
Our approved vehicle installers come to you, at home or at work, and fit the car immobiliser with minimal disruption to your day. Before we leave, we test the system thoroughly, confirm it's communicating correctly with your vehicle, and walk you through setting and using your PIN sequence so you're confident from day one. The same service is available for van and commercial vehicle immobilisers.
Order today and start enjoying the peace of mind that comes from knowing your vehicle is protected. Contact us to find out more about our car immobilisers and GPS vehicle tracking solutions for businesses and individual drivers.
Car Immobiliser FAQs
A car immobiliser is a security device that prevents your engine from starting unless the correct authorisation is given. GPSBob's Casper immobilisers connect directly to your vehicle's CAN bus and require a PIN entered on the steering wheel before the car will start
Relay attacks and key cloning both rely on capturing or copying your key fob's signal. Because GPSBob car immobilisers require a manual PIN rather than a fob signal, cloned or relayed signals alone can't start the vehicle — closing off this common theft method.
No. GPSBob car immobilisers are a single one-off payment with no ongoing subscription or monthly fee — you pay once and you're protected.
No. GPSBob includes free nationwide installation with every car immobiliser. A professional approved installer comes to your home, workplace, or even a dealership to fit the device correctly.
Both are ghost-style, invisible car immobilisers using CAN bus technology and steering-wheel PIN entry. The Casper Pro builds on the standard Casper, but also includes a BLE Fob, allowing the vehicle to start if this is present
GPSBob's car immobilisers are designed to be invisible, with no key fobs, LEDs, or physical indicators that reveal the device is fitted, making them significantly harder for thieves to identify or bypass compared to traditional visible alarms.
No. Car immobilisers connect to your vehicle's CAN bus and are designed to work seamlessly alongside your existing systems, with no impact on normal driving or vehicle functionality.
Yes. Many customers combine a car immobiliser with a GPSBob car tracker for layered protection — the immobiliser stops the engine starting, while the tracker lets you monitor and locate the vehicle in real time.
