How can you add your credit cards to Passbook in iOS6?
BillGuard for Passbook is now integrated with Apple's Passbook,
offering consumers a secure way to get on-the-go notifications of
all their credit and debit card transactions in one place.
Specifically, BillGuard for Passbook brings your credit/debit card
transactions and balances to Passbook and notifies users of any
questionable transactions via real-time alerts.