The Hardware Recovery Vector
Unlike an iPhone or an iPad, a MacBook does not feature a built-in GPS chip, meaning it relies entirely on surrounding Wi-Fi networks to broadcast its location to the “Find My” network. If you lose your Mac in a coffee shop or leave it on an aeroplane, and it is subsequently powered off or loses Wi-Fi connectivity, tracking it digitally becomes impossible. The only remaining method of recovery is relying on the goodwill of whoever finds the hardware.
How to Change the Lock Screen Message
You must instruct macOS to permanently burn a customized line of text—such as your phone number or an alternate email address—directly onto the primary login screen, ensuring anyone who opens the laptop instantly knows how to contact you.
1. Click the Apple Logo in the top-left corner of the screen.
2. Select System Settings from the dropdown menu (or System Preferences on older versions).
3. In the left-hand sidebar, scroll down and click on Lock Screen.
4. Look at the main pane and locate the option labelled Show message when locked.
5. Click the toggle switch to move it to the On position.
6. A new button labelled Set… will instantly appear next to the toggle. Click it.
7. A small text box will pop up. Type your recovery message. (Example: “If found, please call 555-0199 or email [email protected] for a reward.”)
8. Click OK.
The operating system immediately injects this text into the boot sequence. The next time you lock your screen or restart the computer, your customized message will be prominently displayed at the absolute bottom of the screen, directly beneath the password entry field.