Square, the payments company that makes it easy for small businesses to accept credit card payments wherever you go, is finally catching up with the times today by updating its tiny card reader.

Learn about free and cheap iPhone credit card readers and explore technologies like tap to pay that enable you to accept payments without a card reader. In my evaluation, here are the best free and ...

LAS VEGAS — Square sells its own cash register replacement for the iPad, but the mobile payments company has yet to debut any iPhone-compatible accessories for its card reader. Well, until now.