diff --git a/Use-Cases.md b/Use-Cases.md
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@@ -406,3 +406,24 @@ User
 * ~~[The default view](https://i.imgur.com/wC2yOsk.png)~~
 * ~~[View for displaying public info](https://i.imgur.com/WqX4pmH.png)~~
 * ~~[Error when NFC isn't active on the phone or when NFC rights aren't given for the app](https://i.imgur.com/nizDiXG.png)~~
+
+
+# **Use Case #12 (new)**  
+**Use Case Title:**  
+Save PIN 1 of the ID card on the phone  
+**Preconditions:**  
+The mobile authentication application is installed on the user’s smartphone.  
+The application is allowed to store information on the user’s smartphone.
+The PIN 1 is not saved at the start.  
+**Primary actor:**  
+User  
+**Main success scenario:**  
+1. The user opens the settings menu from the home screen of the application.  
+2. The user chooses the option to save the PIN 1 of the ID card.  
+3. The application asks the user to enter a PIN 1 (includes Use Case #2).  
+4. The application notifies the user that the PIN 1 has been saved to the application and displays it to the user in the settings menu.  
+
+**Extensions:**  
+None  
+
+_The use case was previously missing as the user story for this functionality was missing as well._
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