Interesting to see this being used in practice - a payment card with a fingerprint scanner built into it. With the upcoming changes to payments law to introduce strong customer authentication (=2-factor authentication that can include a biometric element), we can all expect that paying for everything is likely to be a little more cumbersome for a while. This is a trade off for the associated reduction in fraud, but is likely to hit user experience - and therefore retailer revenues - as we are all regularly forced into having to enter passwords to pay for any online shopping, and more and more contactless transactions will need a PIN number as well. 

A lot of the solutions to avoid a major drop in user experience are likely to come from better tech, of which biometrics form a big part. But most biometric solutions need a smart phone or something similar - what's nice about this as a solution is that it doesn't need its own power source for the biometric to work, meaning that you'll be able to use this more secure version of contactless payment in stores without having to worry about whether or not your phone is about to die on you. As I head off camping for the long weekend, I can't help thinking it would be quite handy to have one of these...