At least I hope this is my future! I now officially need an iphone solely so I can have this app for processing credit cards: Square
There's no merchant fee or contract just 2.9% of sales. And the processor itself is a beauty: looks like about an inch square that plugs into the audio jack of your iphone. Never more would I be embarrassed about dragging out my gigantic machine with (shudder) the carbon copy triplicate receipts that look so 1982.