3 ms·Pay with square app doesn't use the dongle at all.by spullara 14y agoPay with square app doesn't use the dongle at all.pbreit 14y agoThe note talks about processing all Starbucks cc txns.jarek 14y agoI am assuming at the volume in question they'll just retrofit whatever software to use the card readers Starbucks currently uses. They're pretty well built.