Don't look now, but Square is getting hip with Passbook. While Apple's Passbook feature remains mostly unused for many, devs and apps are slowly getting their act in order for compatibility. Now, the mobile payment provider has opened up support for both gift cards as well as Passbook, just in time for the holidays. The Square Wallet app has been updated with the changes, enabling users to "treat friends and family to local favorites with Square gift cards." You'll be able to redeem them via the Wallet app, Passport or plain 'ole paper. Using Square to run your small business? Hello, opportunity.