Square is a simple and easy payment platform created by Twitter co-founder Jack Dorsey that lets anyone process credit cards with the aid of a tiny free magnetic card reader that attaches to a iPhone or iPad.
Simply swipe a credit card (Visa, Master Card, American Express and Discover), let customers sign directly on the screen and send them an email or text message receipt. Customers can even add a tip as they sign. The app provides full reports on sales patterns and inventory.
There are no complicated contracts, monthly fees or merchant account necessary. With each swipe there is just one fee: 2.75%. Download the free app from the iTunes App Store.
Square obsoletes cash registers and credit card terminals with this groundbreaking payment system transforming everyday transactions between buyers and sellers.