Sort:  

I just updated the post with the whitepaper. I recommend reading that, it's one of the most easily understood I've seen in a while without the doublespeak I see in many that I read.

So is there a physical device?

yes, it's a card, backed by crypto, that is used to purchase at merchants.

Coin Marketplace

STEEM 0.20
TRX 0.25
JST 0.039
BTC 97542.75
ETH 3458.83
USDT 1.00
SBD 3.15