The argument surrounding full-body scanners has been taken to a more personal level in Germany - with a series of naked protests dubbed 'fleshmobs'.
Groups of demonstrators have stripped off at airports in Berlin, Frankfurt and Dusseldorf in reaction to the news that officials are considering installing the scanners during the coming year.
A number of governments around the world are looking at using the controversial technology in a bid to boost airport security.
Checking in: Members of the 'Piraten Partei' walk through Berlin-Tegel airport
The demonstration was organised by the Piraten Partei (Pirate Party) - a group who say on their website that they stand up for 'civil liberties'.
Protestors, using the motto 'you do not need to scan us - we are already naked', scrawled messages on their bodies including 'something to hide?' and 'be a good citizen – drop your pants'.
Fleshmob: The group say they are standing up for civil liberties and are protesting at full-body scanners
Champions of the devices - which not only reveal hidden weapons or explosives but also breast enlargements and a hazy outline of travellers' genitals - say it will hasten security checks.
