On the 39th floor above Canary Wharf, overlooking London's finance centre, I found a cash machine with a difference. This ATM chews up your £10 notes rather than spewing them out, and in return you get a computer code. This is the world's first Bitcoin cash machine and if the people showing it to me are to be believed, it shows us the future of money.
http://www.bbc.co.uk/news/technology-23150740