Almost twenty years on, ANPR technology still surprises unwary drivers

Although automatic number plate recognition (ANPR) technology has been around for many years now, its use still catches many drivers unawares and leaves some questioning its "Big Brother" aspect. However, its importance in criminal investigations leaves little doubt as to its continued value for the community.

How does ANPR technology work?

Automatic number plate recognition (ANPR) technology works by means of a camera, fixed in a police car, detecting number plate details and then checking them against an ever-growing database. (Please see Automatic number plate recognition (ANPR) technology not to be underestimated.)

The database includes entries for convicted drink drivers and those with other disqualifications - such as suspensions and cancellations - and for major offences such as negligent driving causing grievous bodily harm (GBH) or worse. The system also detects unregistered, stolen and uninsured vehicles, including those with late payment matters.