The Square app has been updated to improve transaction speed, add support for $0.00 price points (so merchants can keep track of notes on orders like 'no cheese') and stopped requiring signatures for purchases under $25.
As for the new Square Card Case, it's designed to enable quick and easy repeat purchases at businesses that support Square. It allows users to browse menus, see specials, store receipts and pay without needing a credit card. Users can open a "tab" with a business and allow their saved credit card information to be charged without ever needing to physically hand the card to the merchant.
For users who frequent businesses that support Square, the Card Case can save a bit of time checking out. For businesses, the standard Square app is an extremely popular tool to enable quick and easy credit card purchases.
Square is now processing more than 1 million transactions and $100 million in mobile payments per month, and the company expects to double this volume by October.