Makenosound

matthewb:

Big news overnight is the launch of Square, a mobile app supporting multiple devices that enables anyone to take credit card transactions without the hassle of merchant accounts or complicated fee structures. It’s the brainchild of Twitter inventor Jack Dorsey and with the likes of Buzz Andersen involved, it’s going to be huge.

It’s worth mentioning that the card reader mechanism uses the audio jack to pass card data to the device. Genius.