Jack Dorsey, one of the brains behind popular micro-blogging site Twitter, is selling a new product called Square that turns your iPhone into a credit card payment system.
Unlike similar iPhone applications, Square includes not only the payment software, but a magnetic card reader that allows you to swipe cards instead of manually inputting credit card numbers. The payment system is designed for any type of business owner including storefront owners, street vendors, and even part-time flea market salespeople.
Read more @ pcworld.com
