The controversial ‘see through’ scanner technology that has recently been introduced in the UK and US has also received approval from the Canadian national air security agency.

The device produces a 3D outline of a person’s naked body and can detect plastic explosives or other dangerous items.

Only passengers that require additional screening are required to pass through the machines and they can still opt for a physical check.

The scanner emits low-level radio frequency waves that meet Canadian health and safety standards.

The scanners have already been tested at Kelowna International Airport in British Columbia.