What Are Digital Number Plates and How Do They Work?

Digital plates, also known as digital licence plates, electronic number plates, or smart number plates, use electronic displays to show a vehicle’s registration, often paired with smart features like GPS tracking, theft alerts, or remote updates.

But while digital car number plates are gaining attention overseas, they’re still very much a grey area in the UK. Are they legal? How do they actually work? And are they something drivers should even be considering right now?

In this guide, we’ll break down how digital number plates work, what features they offer, where they’re currently allowed, and why traditional number plates are still the only road-compliant option in the UK.

What Are Digital Number Plates?

Digital number plates are electronic alternatives to traditional vehicle registration plates. Instead of printed or embossed characters, the registration is displayed on a digital screen built into the plate itself.

How Do They Work?

Digital plates typically use e-ink or LED-style displays, similar to the technology found in e-readers or digital signage. The registration number is stored electronically and shown on the screen rather than being permanently fixed in plastic or metal.

Often referred to as smart car number plates, they can be connected to mobile networks, GPS systems, or dedicated apps. This allows the plate to update information, send alerts, or interact with other systems in real time.

Electronic display and technology

Most digital licence plates use either e-ink or LED-style displays. E-ink screens are designed for high visibility in sunlight and low power usage, holding the image even when not actively powered. LED displays use illuminated pixels and can appear brighter, especially at night. 

In both cases, the registration characters are rendered digitally rather than physically fixed. 

Power source and connectivity

Digital number plates require power, usually supplied by a built-in battery or connected directly to the vehicle. Battery-powered models are designed to last long periods between charges.

Most smart number plates also include connectivity, such as GPS, mobile data, or Bluetooth. This allows the plate to link to an app or manufacturer system, enabling monitoring, alerts, or status updates while the vehicle is in use or parked.

Updating information in real-time

Electronic number plates can update information digitally. In approved regions, this may include changing how the registration is displayed or showing alerts if a vehicle is reported stolen.

Updates are typically managed through secure apps or manufacturer platforms rather than by the driver directly. While this flexibility is a neat selling point, it’s also one of the main reasons digital plates face strict legal controls.

Where Are Digital Number Plates Currently Legal?

Currently, the only place where digital plates are legal is in the US, and only in certain states. Only a small number of states allow them, often under pilot programmes with strict rules around display format, data security, and law enforcement access.

Most countries still rely entirely on traditional plates due to enforcement, reliability, and compliance concerns.

Digital vs Traditional Number Plates

Digital and traditional number plates serve the same purpose, but one is a connected piece of technology, the other is a physical plate attached to your vehicle. 

Cost comparison

Digital number plates are significantly more expensive than traditional options. In regions where they’re available, prices often include the hardware, setup fees, and ongoing subscriptions. By contrast, traditional plates (including standard acrylic, 3D gel, and 4D plates) are a one-time purchase. 

Reliability and maintenance

Traditional number plates are simple and durable. They don’t rely on batteries, connectivity, or software to remain visible and compliant.

Digital plates might look great, but do come with a few risks. Things like screen faults, battery issues, and connectivity problems. If the display fails, the vehicle may no longer show a readable registration, which can quickly become a legal issue.

Simplicity

Traditional number plates are fully recognised under UK law when made to DVLA standards. Fit them correctly and you’re road-ready, with no extra steps.

Digital number plates, on the other hand, are not approved for UK road use. Using a non-approved plate risks fines, MOT failure, and insurance complications. Until regulations change, traditional plates remain the legally straightforward option.

Are Digital Number Plates Worth It?

In short, unless you live in the select US states that allow them – no, they aren’t worth it.

The technology is clever, the security features are impressive, and in the future, they may become more popular.  But in the UK, digital number plates are not legal for road use. 

Traditional number plates remain the safest, simplest, and fully compliant option for UK drivers. They’re affordable, reliable, easy to replace, and available in a wide range of styles.

If you need new plates today, whether it’s a replacement, an upgrade, or a display plate, Great Plates makes it easy to design and order plates that look good and stay road-compliant