Could have potential: http://www.bbc.co.uk/news/uk-england-30665681

All this electronic instant money exchange worries me, it is so easy for things to go wrong. (Credit cards are different, I can see where the money goes!)

The canteen at a rather well known auto manufacturer went "cash free", all payments were made by pre-paid card. During the first few months it went horribly wrong and those that had put the most credit on their cards lost the most!

I'll be using cash where I can up to the day I fall off my perch