Square is a small unit about the size of a postage stamp that plugs into the headphone jack of various smartphones, media players and computers. Users swipe their cards into the device, and then sign ...

Christine Sharp-Crowe, an artist and owner of downtown shop Made in the Philtower, said credit card payments used to be a pain to accept at craft shows. "You'd use those awkward devices that rubbed on ...

Merchants may have some difficulty switching to EMV cards next year, but at least they’ll have a range of options when it comes to payment terminals. Square is debuting its affordable chip card reader ...