Square Card Case

First, Square revolutionized the simplicity in paying via Credit Card. Now they’re on their way to omit the card from the process totally.

The first time you pay with your Credit Card (at a place that uses Square) you can ask to open up a tab. Next time you walk in, you enable the tab and the person behind the counter charges your payment to the tab. You get a notification, digital receipts and all.

Brilliant.