Starbucks in mobile payment deal with Square Starbucks Coffee Co. has signed on with Square Inc. to process its credit and debit card purchases, the coffee shop franchiser said Wednesday. Share on FacebookPost on XFollow us By Stingray Branding|2012-08-08T13:41:43-04:00August 8th, 2012|Job openings|Comments Off on Starbucks in mobile payment deal with Square Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail