Been paying for your frappuccino via Square, and fancied getting some of that diminutive payment-taking action for your own business? Well, previously, if you didn't live near an Apple store, Radioshack, Walgreens, Fed Ex office, Best Buy, Target, UPS or Wal-Mart then you were fresh outta retail-luck. Or living in a cave. Now, however AT&T has started stocking the card readers at all its bricks and mortar outlets too, further plumping-up that number of locations that stock it. Frankly, we're not surprised to see this reaching more shops, if the sales guys spend all their time drinking that brand-endorsed coffee.