--- title: "Notification Security PIN" --- # Notification Security PIN > You can require users to enter a personal identification number (PIN) before they hear a voice alarm notification. This helps ensure that the person receiving the alarm is authorized to do so—especially in shared phone environments. Voice alarm notifications typically allow users to acknowledge alarms by pressing **1**. Requiring a PIN prevents unauthorized acknowledgment. ## Add a PIN to a User Profile To assign a PIN to a user: 1. In the Gateway, go to **Platform** > **Security** > **User Sources**. 2. Under your user source (such as **default**), click **Manage Users**. ![](security-pin-manage-users.png) 3. Locate the user and click **Edit**. ![](security-pin-edit-user.png) 4. In the user editor, confirm that the **Phone** contact field is populated. 5. Enter a numeric **Security PIN** and click **Save Changes**. ![](security-pin-pin.png) ## Require PIN in the Notification Block Once users have PINs, configure your pipeline to require them: 1. In the **Designer**, open your **Alarm Notification Pipelines**. 2. Select the **Notification Block** in the workspace. 3. On the **Notification** tab, select the **Voice** profile. 4. Set **Require PIN** to **True**. ![](2020-04-07_14-28-53.png) Now, when a user receives a call, they’ll be prompted to enter their PIN followed by the pound key before the message plays.