[jimmytucson]

I used to work at Starbucks (albeit going on 5 years ago) and although I don't have the exact statistics or a perfect memory, it was not a "vast majority". If I had to guess, I'd say probably something like 2/3. Maybe the ratio increases if you count Starbucks gift cards.

Either way you look at it, Square's transaction volume surges with this deal. Good on both parties.

[zevyoura]

2/3 is kind of a vast majority; it means twice as many people are paying with cards than not.