You can help prevent accidental purchases on your device from apps and games available outside of the Family section by turning on authentication (apps and games in the Family section automatically request authentication before buying).
- Open the Google Play app .
- At the top right, tap the profile icon.
- Tap Settings Authentication Require authentication for purchases.
- Choose a setting.
- Follow the on-screen instructions.
Tip: To change authentication settings you will need your Google password. Visit account recovery if you don't remember your password.