According to a number of civil rights groups, new body scanners being introduced at UK airports could breach child protection laws.
Privacy campaigners have raised concerns that images created by the scanners are too graphic, and could breach child protection laws that make it illegal to create an indecent image of a child.
The UK Department for Transport has responded by saying that it will develop a code of practice for airport staff using the scanners.
Since October 2009, Manchester Airport has been trialling a full body scanner, which uses passive millimeter wave technology to create a virtual three-dimensional image of a passenger.
BAA also plans to introduce the device at Heathrow, while the UK government has pledged to enhance airport security measures following a foiled attempt to blow up a US airliner on Christmas Day.