Indeed, future visitors to repressive countries might be surprised to find that airportsecurity requires not just a customs form and passport check, but also a voice scan.
Last month, disaster struck at Washington's Dulles International Airport when the Transportation Security Administration opened the case during a baggage check.
"The main problems are that the airport environment is an alien one and processes such as check-in and security require co-operation with strict guidelines, " Ms Gough said.