Traditional car keys even modern keyless fobs are gradually being replaced. More and more manufacturers are adopting UWB (Ultra-Wideband) keys and digital car keys, which allow drivers to unlock and start their vehicles using a smartphone or smartwatch. For UK motorists, this means new levels of convenience, but also new risks. In this article we’ll explain what these technologies are, how they work, which vehicles already use them, what problems can occur and what you can do yourself.
What Are UWB Keys?
UWB (Ultra-Wideband) is a short-range wireless technology that uses an ultra-wide radio spectrum.
Key benefits for car access:
- Precise location the vehicle can identify whether the key is inside, outside or in the boot.
- Protection against relay attacks unlike traditional keyless entry, UWB can measure distance accurately (within 10–15 cm), making it far harder for thieves to “relay” the signal.
- Fast response the connection is established instantly, providing smooth keyless access.
What Is a Digital Car Key?
A digital car key is a virtual credential stored on a smartphone, smartwatch or similar device.
It typically relies on:
- NFC (Near Field Communication) tapping the phone against the car handle.
- Bluetooth LE unlocking at a short distance, similar to a classic remote fob.
- UWB a more secure option, allowing precise distance measurement.
Advantage: You can share access remotely with family or colleagues.
Disadvantage: Total reliance on your phone and its battery.
Which Cars in the UK Use UWB and Digital Key Technologies?
Premium brands are leading the way:
- BMW: BMW Digital Key Plus (works with iPhone and Apple Watch via UWB).
- Mercedes-Benz: “Digital Vehicle Key” (via Android/Apple).
- Hyundai and Kia: Genesis Digital Key (NFC UWB in models such as the Ioniq and EV6).
- Volkswagen Group (VW, Audi): rolling out UWB on new ID. models.
- Tesla: digital key via the Tesla app (Bluetooth). In the mass market, NFC-based systems remain more common, but premium marques are moving towards UWB.
Potential Problems With UWB and Digital Keys
Even advanced technologies are not flawless:
- Phone dependency: a flat battery may leave you stranded.
- Device compatibility: not all smartphones support UWB (e.g. iPhone 11+ and certain Samsung Galaxy models only).
- Software glitches: updates to iOS or Android sometimes disrupt key functionality.
- Registration issues: adding a new digital key may require a dealer visit.
- Cybersecurity risks: while UWB is far more secure than classic keyless entry, no system is entirely immune.
Can Problems Be Solved Without Professional Help?
Some issues can be fixed without a locksmith or dealer visit. For example:
Phone won’t unlock the car (NFC/Bluetooth)
- Check NFC/Bluetooth is switched on.
- Restart your device.
- Hold your phone closer to the handle (for NFC). UWB key not recognised:
- Ensure your phone supports UWB and is updated to the latest OS.
- Check the digital key settings in the manufacturer’s app (e.g. BMW Connected, Hyundai Bluelink). Car unresponsive after update:
- Remove and re-add the digital key via the app. If the main physical key is lost or digital access is deleted in most cases you will need a professional auto locksmith or dealer.
How to Keep Yourself and Your Car Safe
- Keep a physical key as a backup.
- Enable PIN or biometric security on your phone.
- Stay up to date install software updates promptly.
- For fleet users: use corporate access control (remote key sharing, tracking).
The Future in the UK
By 2026–2027, most new mid-range and premium cars in the UK will feature digital keys with UWB.
Apple, Samsung and Google are working on a unified Car Connectivity Consortium (CCC) standard.
For drivers this means greater convenience but also a need for stronger digital security.
UWB and digital keys are already becoming a reality for UK motorists. They offer convenience, advanced theft protection and the ability to share access via smartphone. But there are downsides too: dependence on mobile devices, compatibility issues and potential cyber risks.
Expert tip: always keep a spare car key (physical version), update your apps and firmware, and check your device’s UWB compatibility. If access is completely lost, it’s safer to call a licensed auto locksmith than attempt risky DIY work.
