Behind the scenes at a hackathon

Hack days or hackathons are events where large numbers of people come together to collaboratively programme.

Technology companies use them to generate new ideas and many events are open to non-programmers.

LJ Rich goes behind the scenes of a two day event, in an attempt to create the next "must have" app.

Watch more clips on the Click homepage. If you are in the UK you can watch the whole programme on BBC iPlayer.