No Tag No Start

No Tag No Start immobiliser

A driver-tag immobiliser that stops your vehicle starting unless your authorised tag is present — defeating keyless, relay and key-clone theft. Professionally fitted in Bradford and across Yorkshire.

No Tag No Start is a simple, powerful idea: your vehicle will not start unless an authorised driver tag is inside it. Even if thieves relay your key signal, clone a key or plug into the OBD port, the engine stays locked without the tag — so the car simply will not move.

Secure your vehicle today Find your solution

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Times the engine starts without an authorised tag

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Theft methods defeated: relay, cloning and OBD

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Working-day response to enquiries

Why it matters

The theft methods No Tag No Start defeats

Relay attacks

Thieves relay your key's signal from inside your home to unlock and start the car.

Key cloning

Programmed spare keys let thieves drive away without any sign of a break-in.

OBD port theft

Criminals plug into the diagnostic port to program a new key in minutes.

Quiet, fast getaways

Keyless theft is silent and quick — often over before anyone notices.

The solution

How No Tag No Start protects your vehicle

  • Driver-tag recognition

    The system only allows the engine to start when an authorised tag is present in the vehicle.

  • Beats keyless & relay theft

    Even a relayed or cloned key cannot start the car without the tag — the attack simply fails.

  • Covert & automatic

    Hardwired and concealed, it arms itself automatically — nothing to remember and nothing for a thief to find.

  • Pairs with tracking

    Combine it with a Thatcham-approved tracker for prevention plus 24/7 monitored recovery.

What you get

  • Theft prevention, not just recovery — the car will not start without your tag
  • Protection against relay, key-cloning and OBD attacks
  • Covert, automatic operation with nothing to switch on
  • Professional, concealed installation
  • A full manufacturer's warranty

Why choose Invisi Track?

  • Specialists in driver-tag immobilisation
  • Authorised Scorpion Track installer
  • Workshop fitting or mobile across Yorkshire
  • Clean, concealed installations
  • Honest, jargon-free advice
  • One-working-day response to enquiries

Professional No Tag No Start installation

We hardwire and conceal the system so it integrates cleanly with your vehicle and arms automatically every time. Fitted at our Bradford workshop or by mobile appointment at your home or work across Yorkshire. Pair it with a tracker for complete prevention-plus-recovery protection.

Get a quote About our workshop

Monitoring

How No Tag No Start works

01

Carry your tag

Authorised drivers carry a small tag or fob — keep it on your keyring or in your bag.

02

Tag present, engine starts

When your tag is in the vehicle, it starts and drives exactly as normal.

03

No tag, no start

Without an authorised tag the engine will not start — so a relayed or cloned key gets a thief nowhere.

Authorised partner

Authorised Scorpion Track installer

Authorised Partner

Scorpion Track

As an authorised Scorpion Track installer, we fit certified, Thatcham-approved tracking and immobilisation backed by 24/7 monitoring — installed to manufacturer standard.

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Monitoring Partner

Global Telemetrics

Global Telemetrics runs the 24/7 secure operating centre behind our S5+ tracker systems — the monitoring network that detects theft and works with police to recover stolen vehicles across the UK and Europe.

Explore the S5+ tracker

Authorised Partner

Road Angel

As an authorised Road Angel partner, we professionally install the full Road Angel dash cam range — hardwired Full HD, 2K and 4K front and rear cameras with parking mode.

View dash cams

FAQs

Questions, answered

What is No Tag No Start?
No Tag No Start is a driver-tag immobiliser: your vehicle will only start when an authorised tag is present inside it. Without the tag the engine will not start — even with the original key, a cloned key or a relayed signal.
How does it stop keyless and relay theft?
Relay and key-clone attacks trick the car into thinking the key is present. No Tag No Start adds a separate authorisation the thief does not have — the tag — so the engine stays immobilised and the car cannot be driven away.
Do I have to switch it on each time?
No — it arms automatically. You just carry your tag; when it is present the car starts normally, and when it is not, the engine will not start.
What if I lose my tag?
Tags can be managed and replaced, and most systems support several authorised tags for a household. We will set you up with what you need and explain how to add or remove tags.
Is there a monthly subscription?
On its own, No Tag No Start is an immobiliser and does not need a monitoring subscription. If you add a tracker for recovery, the tracking element includes monitoring — we will explain the options clearly.
Can I add it to a tracker?
Yes — pairing No Tag No Start with a Thatcham-approved tracker gives you prevention (the car will not start) plus 24/7 monitored recovery if it is ever taken.
Which vehicles can you fit it to?
Cars, vans and motorhomes. Tell us your vehicle when you enquire and we will confirm compatibility.
Do you offer mobile fitting?
Yes — at our Bradford workshop or mobile at your home or workplace across Yorkshire. Share your postcode when you enquire.
“Incredible service from start to finish. The recovery support was fast, efficient, and reassuring.”

Related

How relay attacks bypass keyless entry S5+ tracking & immobiliser Insurance-approved trackers Cars & van trackers The technology explained Get a quote
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