Amazon has tossed its proverbial hat into the mobile card-reading ring. The device charges merchants a 1.75 percent per swipe transaction fee for those who sign up before Oct. 31, a fee thats lower than Squares 2.75 percent per swipe transaction. Following the special rate, Amazon will return to a 2.5 percent per transaction fee on Jan. 1, 2016. Businesses and organizations using Amazon Local Register will enjoy industry-leading low rates, trusted and secure payment processing, and access to award-winning customer support, Matt Swann, Vice President of Amazon Local Commerce, said in a press release.