[g4m8i7]

It doesn't. The FAQ says so. But it also says that it's made for the USA market, which is sufficiently large to generate some serious profit.

Not everything has to have global reach or impact.

[tomkin]

Sure, but in the spirit of longevity, you're talking about a stop-gap solution at the most. There's also this: they aren't solving a real problem. My wallet going from 1 inch to 1/2 inch isn't a selling point.

[g4m8i7]

I'll give you your second point. I bought one because I thought it was neat. If I can reduce the size of my wallet, then sure, that's great, but the biggest draw for me is "OOh. That's neat tech, how did they fit it in a credit card?"