going to work? what card you pull from is a little confusing. exactly, like you said, it s a credit card size cards, it can store multiple cards at a time: you install the cards and type them into iphone app. or smart phone app. and syncs up with the coin. when you decide i want to pay with this atm card you toll gel through this small button on the card to use it it s very convenient. only auto dollars right now but doesn t ship until next summer. what s very much anticipation building around a pretty cool looking device. are these security concerns valid? i don t remember the last time somebody checked my signature on the back of my visa, you know. i think they are trying to implement security measures. ceo told me they re already made if your coin card is too far away from your iphone, then you end up having it detected if it s been longer than 10 minutes. that s a good thing. that s a good thing. the flip side is if my phone dies, my coin may not work.