You can set your device to prevent others from using it if it is reset to factory settings without your permission. For example, if your protected device was stolen and erased, only someone with your Google Account or screen lock could use it.
Set up device protection
- Add a Google Account on your device: To prevent other people from using your device if it gets erased, add your Google Account to your device. Learn how to add your Google Account on Android.
- Set a screen lock: To prevent other people from using or erasing your device, set a screen lock. Learn how to set a screen lock.
Tip: If you don't have a screen lock set, you might be able to lock your device remotely with Find My Device. Learn how to use Find My Device.
Turn off device protection
To turn off device protection, remove your Google Account from your device. Find out how to remove accounts.
For devices with Android 14 or older: If you have Developer options turned on, you can also turn off device protection from your device's Settings app. Tap System 
Expect to verify your ownership after factory reset
To factory reset a protected device, you'll need to either unlock your screen or enter your Google Account password. This ensures that you or someone that you trust is doing the reset.
Expect to unlock your screen or enter Google Account information if you:
- Erase your device's data using the Settings app: You'll be asked to enter your screen lock before you reset.
- Reset your device using its buttons: If you reset your device using its buttons (Recovery mode), you'll need to enter your PIN, password or pattern. You'll also see an option to use the Google Account that was on your device before you reset it.
- Reset your device remotely with Find My Device: If you reset your device remotely using Find My Device, you'll need to enter a Google username and password associated with the device.
Important: You can sign in with any Google Account previously added and synced to the device as an account or user, but not as a guest. If you can't give this information during setup, you won't be able to use the device at all after resetting to factory settings. If you can't sign in to your Google Account, get sign-in help.