'Risk profiling' software aims to protect borders

A British company has developed software it believes can help detect and prevent potentially dangerous passengers and cargo entering the UK using a technique known as "risk profiling".

Executives at SAS Software, based in Buckinghamshire, say the use of such a programme could well have prevented the so-called Underpants Bomber, Umar Farouk Abdulmutallab, being able to board a flight to Detroit in 2009 with explosives sewn into his underwear.

The BBC's security correspondent Frank Gardner visited SAS Software's offices to ask them about risk profiling and whether it can really reduce the risk of international terrorism.