Swipe Your Credit Card on a Cell Phone
Monday, December 7, 2009 - 17:14
in Mathematics & Economics
(PhysOrg.com) -- With a small card reader that attaches to a cell phone, a new company is making it easier for small businesses and even individuals to accept credit card payments. The San Francisco start-up, called Square, which opened just last week, is headed by Twitter cofounder Jack Dorsey.