automatic number plate recognition

US /ˌɔːtəˌmætɪk ˈnʌmbər pleɪt rɛkəɡˈnɪʃən/
UK /ˌɔːtəˌmætɪk ˈnʌmbər pleɪt rɛkəɡˈnɪʃən/
"automatic number plate recognition" picture
1.

a technology that uses optical character recognition on images to read vehicle registration plates to create vehicle location data

:
The police use automatic number plate recognition to track stolen cars.
Many car parks now have automatic number plate recognition systems.