> For AI agents: [llms.txt](https://docs.trustedauth.com/llms.txt) provides a Markdown index of this documentation.

# Mac: Configure the screen to lock when a smart credential is disconnected

The typical scenario for use of mobile smart credential login to a Mac computer is the following:

- The computer logs the user in (after entry of a correct PIN) when the user is within BLE range of the computer
- The computer locks the computer screen when the user disconnects the smart credential through the Entrust Identity mobile app.

Complete the steps that follow to configure the screen locking behavior.

## Prerequisites

- A user with administrative privileges must be logged in using the mobile smart credential associated with the computer.
- The mobile smart credential is connected by Bluetooth. (To verify this, use the sc_auth identities command.)

To configure the screen to lock when a smart credential is disconnected from Bluetooth

1. Open **System Preferences > Security > General > Advanced**.

2. Enable the **Turn on Screen Saver when login token is removed** option.

3. Click **OK**.

4. In **System Preferences > Security > General**, set the **Require password __ after sleep or screen saver begins** option to **immediately**.

   ![Mac configure screen lock](/assets/images/mac-configure-screen-lock-eb493bed21490bf79f0c04612bd226df.png)

5. Click the lock icon to save the change.