Automatic number plate recognition cameras are being installed at Manchester Airport.
Five of the cameras, which can read more than 500,000 number plates each day, will be placed around the complex.
Manchester Airport Commander Supt Peter Turner said they would add an "extra level of security".
They will help police check whether there is reason to investigate vehicles at the airport.
"It will record the number plates of every vehicle which enters or leaves the airport and allows us to track people we would like to intercept."
He added that the number plates of vehicles which needed to be tracked were in the minority.
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