Square

Could the new Square Register and Square Card Case usher in the paperless receipt?

If you haven't already heard of Square (http://www.squareup.com) then you probably will soon. Created by Jack Dorsey, the same mind behind Twitter, the service has put small, free credit card readers into the hands of hundreds of thousands of people and made the ability to accept credit cards a reality for small business owners and infrequent Craigslist-sellers alike.

But now Dorsey and his innovative gang have something even more expensive and archaic than credit card processing in their sights: the traditional point-of-sale cash register may be the next to fall.

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