Jailbreaker

Computer hackers rarely show their faces in public, allowing the stereotype of the socially awkward loner sitting in the dark in front of a computer screen to flourish.

But the reality is rather different - at least when it comes to jailbreaking - a specialist type of hacking which involves removing the restrictions that manufacturers place on their devices and then changing the way they work.

Many of the world's best known jailbreakers converged on London last month to talk about their activities at a conference called MyGreatFest.

The event was entirely dedicated to the jailbreaking "scene", many of the attendees turned out to be articulate and highly charismatic entrepreneurs who simply use hacking as a learning tool and stepping stone to careers in business.