iOS: Yes, you can enable the password protection on the My Account tab of the app's Menu by switching the Touch ID or Face ID (for iPhone X and higher) recognition ON. Thereby, you will be able to sign in with either your Touch/Face ID or your password.
Or you can just switch the Remember Password OFF. This way, you will have to enter your password each time you want to sign in to the application.
For more information, please refer to our detailed how-to guides for each and every platform in our Manuals section.