'Naked' scanner in Manchester airport trial

The authorities say it will speed up security checks by quickly revealing any concealed weapons or explosives.

But the full body scans will also show up breast enlargements, body piercings and a clear black-and-white outline of passengers' genitals.

The airport has stressed that the images are not pornographic and will be destroyed straight away.

Sarah Barrett, head of customer experience at the airport, said most passengers did not like the traditional "pat down" search.

At Manchester Airport's Terminal 2, where the machine has been introduced, passengers will no longer have to remove their coats, shoes and belts as they go through security checks.