Starbucks begins selling Square card readers at 7,000 coffee shops

It wasn't too much of a surprise to see Starbucks begin accepting Square payments at many of its coffee shops last year, but the company's latest expansion of that partnership is a bit more unexpected. It's announced today that it has started selling Square card readers at some 7,000 locations across the US, letting customers pick up a means to accept credit card payments along with their beverage of choice. That's only the latest retail deal for Square following partnerships with Apple, Walmart...