Bitcoin on a screen
Media playback is unsupported on your device
Video

Is Bitcoin the future of currency?

The virtual currency Bitcoin is growing in popularity and some are even calling it the future of money.

Spencer Kelly explains the workings behind Bitcoin and how people have already become millionaires through the currency.

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

Go to next video: Berners-Lee on the future of the web