Increasing threat levels and advancements in technology mean the security landscape is constantly evolving. Every high-profile incident over the years, from hijackings to bombings, has brought new intelligence to light about the motives and methods of attackers – which has helped shape the technology we see today.

When a bomb hidden in a cassette player destroyed a plane in the 1988 Lockerbie air disaster, 100 per cent hold baggage screening was consequently rolled out. And airport security measures were ramped up considerably worldwide following the 9/11 attacks in 2001.