Wow, this really is the future, e-money, no cards or cash just your finger.
Shown at RetailTech 2010 this Coca-Cola vending machine that uses Hitachi’s “finger vein authentication†(VeinID) technology when you want to buy a drink.
The biometric system employs finger pulse recognition to see who you are. This might seem a bit sci-fi, but it is apparently safe, convenient and efficient (no need to store lots of data like passwords, log-in numbers, IDs etc).