--- a/latest/use-cases/index.html	Tue May 19 22:22:55 2015 -0400
+++ b/latest/use-cases/index.html	Tue May 19 22:23:20 2015 -0400
@@ -1589,6 +1589,11 @@
 When Ian selects his debit card, he is prompted for a PIN.
               </li>
               <li>
+An authentication code is sent to Tony's mobile phone as a text message
+to ensure that he is the one that initiated the payment. Once he enters the
+authentication code, the payment proceeds.
+              </li>
+              <li>
 Wes has configured his debit card to require a fingerprint scan from his
 mobile device and a Universal Two Factor (U2F) device to be used when
 performing a <a>purchase</a> over $1,000.