Airbus, the European jet manufacturer, is planning to build concealed cameras into the light fittings above the seats in its aircraft. The idea is to let the crew monitor passengers and spot hijackers before they strike. The cameras also work in the dark.
The move is part of an attempt to reassure people who have been frightened off flying since the 11 September attacks.
At an airline technology conference in Prague last week, a delegate from the VALK Foundation said that before 11 September, none of the 4000 people it has helped to overcome their fear of flying had ever cited hijacking as the root of their fear. But since then it has become the main fear for a third of its clients.