I typically hand out a Google Voice # as a sort of DNS for phone calls so that I can change my device number at will.
Wouldn't this allow me to swap out credit cards in a pinch without having to carry new plastic? Or, as you suggest, if I lose my Coin do I have to get all new cards?
If you lose your coin, and someone else picks it up, then you've compromised not just one card, but multiple. Unless I'm missing some sort of authentication when using Coin? And if that authentication exists, how would the non-Coin holder use that card? Is there a timeout that requires the user to authenticate, select a card for presentment, and holds that card in the stripe until a timeout? if not, then there's problems here.
I typically hand out a Google Voice # as a sort of DNS for phone calls so that I can change my device number at will.
Wouldn't this allow me to swap out credit cards in a pinch without having to carry new plastic? Or, as you suggest, if I lose my Coin do I have to get all new cards?