The European Union, which involves 27 European countries, will no longer use backscatter scanners which use very low levels of x-ray to produce anatomically correct images of passengers.
Health concerns have been raised by some experts, that even the miniscule levels of radiation emitted by the machines can affect high-risk populations.
Others argue that the concerns are unfounded.
Airports in the US use the backscatter machines and others devices that produce images using radio waves that do not expose people to x-rays.
