When Starbucks teamed up with Square for their payment processing, it was seen as a big win for the mobile payment space. If Square could compete with traditional payment processors, it stood to reason any startup could. Over time, the relationship began to fracture, and now the mobile payment angle to their partnership is done. Square is shuttering Wallet and rolling it into Order, which lets you order ahead and pay for items before you get to the store. Starbucks won’t be accepting Order, instead concentrating efforts on their competing proprietary product.