When purchasing an item, the customer’s name and photo pop up on the store’s payment system. An employee clicks on the photo to initiate the payment. The customer then gets a notice and receipt for the transaction on their phone.
Paypal looks to be trying to process payments in bricks-and-mortar retail establishments with a clever method of substituting a credit card with a mobile phone and a signature with a photo.
The Paypal system uses a human-based facial recognition scheme that humans are actually quite good at administering: one-to-one matching. If Paypal finds it desirable, an algorithm-based face matching feature could be added fairly simply by installing a small web cam and a software application.