Mobile payment processor Square is getting major backing from Starbucks. Announced this week, Square will soon be used to process payments at approx 7k U.S. Starbucks locations. Additionally, Starbucks CEO Howard Shulz has joined the Square board, and is investing $25M in the company. Also in the works, SB is looking to integrate Pay With Square’s GPS system. It’s location aware, and syncs with the POS system when you walk in a location, letting you pay by simply saying your name.