Not long ago, Square CEO Jack Dorsey challenged his team to create a solution for accepting payments at Starbucks, which the mobile-payments company had partnered with in August. When an engineer worked out a solution (using QR codes within the Square Wallet app that could tap into Starbucks' preexisting system), Dorsey was so giddy that he grabbed a high-end bottle of scotch off his desk and gave it to the engineer as a reward. The only catch? By Fast Company
