Remember the Square card reader and payment service from our first hands-on video in January at Macworld Expo 2010? Square makes it possible for anyone, whether an individual or small business, to take payments via credit card. Shortly after Macworld Expo, I signed up for the service; I finally received my free credit card reader yesterday.
The reader is a tiny square box that plugs into the audio port on iOS devices or other smartphones. Rather than using an expensive (usually $75 or more) "sled" reader like those used in Apple's retail stores, Square developed a reader that did not use the dock connector or need the blessing of Apple's "Made For iPhone" certification. These readers h
