Interesting. What I think is most amazing is this:
Two years is a pretty long time.
Their FAQ addresses the chances of someone changing the card. I thought that too - it looks like you just press the button and it changes them. But it's apparently a bit more than that.
I'd take a flyer on this for $25, maybe even a bit more, but for $55 and my 4 credit cards (only one of which sees any real use, and most of that is online), I'll pass.
But I still think the battery and BTLE tech in this thing is incredible.
Yeah, still $55 on pre-order. I have 4 debits cards and three credit cards, not to mention random gift cards that come and go. It might be worth it at that price point. But probably not at $100.