Great idea but not really that feasible with the logistics and architecture to be put in place for acceptance (at an early stage of course if idea takes off). But seems ironic we are try to rid the world of physical cash in our communities - but yet adding plastic cards, be it all very clever they are too. Saying that, it is a good look upon the general uptake and adoption of Bitcoin, and maybe some of these cards will find their way into the hands of new people, who have only maybe heard about this magic internet money..
The rhetorical fallacy of «cashless society» is really very simple. You're not getting rid of cash, you're replacing it with a behemoth monolith of an infrastructure which is catastrophically centralized.
One question is, say if I have a 0.01 Bitcoin card gifted to me; I then go on to buy a coffee at the local coffee house, where does the change go?
We start in the ballpark of USD100 and USD500 bills because that's where the most demand is. They are not meant for coffee shops, but rather casual experimenting, savings, gifts, storage, transactions where fractions below 0.01 BTC do not really matter. They are meant to be spent physically, whole.
That said, a willing coffee shop will give you change in fiat. And we're working on another exciting solution to small payments.