title: How do I allow the user to pay via PayPal's REST API, but without them having to register a PayPal account?
body: <p>This is my desired use case:</p>
  
  <ul>
  <li>I create a payment via PayPal's REST API.</li>
  <li>I give the user the payment's link, sent to me by PayPal, that the user follows.</li>
  <li>The user <em>chooses whether to pay via their PayPal account, stored credit card <strong>or instantly via a credit card without registering</em></strong>.</li>
  <li>I receive a confirmation.</li>
  </ul>
  
  <p>I can do everything except the penultimate step: I only manage to succeed either:</p>
  
  <ul>
  <li>Allowing the user to pay via their existing PayPal account, or</li>
  <li>Allowing the user to pay via a credit card <em>they gave me the details of already</em>.</li>
  </ul>
  
  <p>I don't want to know their credit card number. All I want is for them to pay any way they want, <em>via PayPal</em>, and then have a confirmation sent to me.</p>
  
  <p>Is this possible?</p>
  
  <p>If so, how?</p>
  
  <p>Thanks!</p>