Q: I’m using a Square credit card reader that attaches to my smartphone, but I’m finding that the transactions don’t always go through properly. Is there a certain smartphone or cellular service ...

I signed up on a whim, and after verifying my account, they actually sent me a free CC swipe reader for the iPhone. It's the about size of a postage stamp but about 1/4" thick, and has a headphone ...

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.