http://thenextweb.com/insider/2013/04/30/paypal-launches-login-with-paypal/
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You know how you can sign into sites using your Twitter, LinkedIn, Google or Facebook accounts? PayPal just launched something called "Log In With PayPal...
PayPal is rolling out a new identity solution designed to help streamline the mobile shopping experience. Unveiled at the Future Insights conference in Las Vegas, the payment company is launching Log In With PayPal. With this service, developers and third-party commerce sites can easily help shoppers pay for what they want with as few swipes and information needed — but still in a secure environment.
Log In with PayPal is not PayPal’s competitor to Facebook Connect or Google+ Sign In. However, it does leverage the OAuth 2.0 protocol that Facebook uses to authenticate users. The idea is that the company’s 128 million account holders can simply complete their purchase through the use of their username and passsword, or mobile number and PIN as a confirmation of their identity."















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