This is the Square, an iPhone credit card payment system that is currently being alpha tested at the Self Edge NYC store. The Square system includes a plastic card reader that is attached to the headphone jack of iPhone or iPod touch and a custom iPhone app.
Credit card’s swipe data is transfered to the app and payment will be processed after customer signed using his finger. Customers email address can also be entered for receving a receipt that includes a map showing the location of the transaction.
