automatic number plate recognition
US /ˌɔːtəˌmætɪk ˈnʌmbər pleɪt rɛkəɡˈnɪʃən/
UK /ˌɔːtəˌmætɪk ˈnʌmbər pleɪt rɛkəɡˈnɪʃən/

1.
a technology that uses optical character recognition on images to read vehicle registration plates to create vehicle location data
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The police use automatic number plate recognition to track stolen cars.
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Many car parks now have automatic number plate recognition systems.
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