ALPR on a smartphone

Automatic License Plate Recognition (ALPR) no longer needs to be the preserve of costly, purpose-built systems. A standard smartphone, securely mounted on a dashboard, can perform much of the same function. With its camera recording traffic continuously, the device captures passing vehicles, processes the plates on-device, and sends queries to connected databases. Within seconds, results are displayed on screen, ready for officers to act.

Cost comparison sharpens the case. A dedicated ALPR rig installed in a patrol vehicle typically costs between €15,000 and €25,000, plus recurring software and support contracts. By contrast, a rugged smartphone with appropriate software and a secure mount may total €800–€1,200. Even factoring in licensing and connectivity, the difference is an order of magnitude—making it feasible to equip every patrol car or even every officer, rather than only a select few units.

As long as software is built with strong security, data integrity, and legal safeguards, this approach can democratise access to ALPR, cut procurement costs, and add agility to frontline policing. Smartphones will not replace advanced fixed systems, but they can extend their reach—bringing a flexible form of ALPR into daily practice.