The Social Payment
What it does:
Person to person and merchant credit card transactions enabled on any mobile device.
Cashless payment with low transaction fees; Free merchant accounts and card readers; Newly-announced Card Case functionality enables customer payment preference storage and cardless payments.
Limited availability of Card Case; No NFC or barcode support; Cash register functionality is limited.
More info: Can Square, Intuit and Other Mobile Payment Providers Compete With a 12-Cent Debit Card Transaction?