Accidental purchases can occur due to various reasons, however, these situations can be easily avoided by applying some basic preventive measures.
Android devices offer a wide range of security features from passwords, to fingerprint or even face recognition options.
Depending on your device, you can personalize your Google Play Store settings to avoid any accidental in-app purchase. In the Settings menu, tap on the User Controls to activate the “Use password to restrict purchases” option.
Moreover, you can enter and confirm a new password to be used solely for in-app purchase validation. After following these steps, any in-game purchases that will be made will require your password confirmation.
If your device is regularly used by someone else as well, you might want to consider creating a different profile for them. You can create a new profile from the Settings menu, by tapping on the Users then select Add user. Follow the on-screen instructions to create and confirm the new user.