To help prevent accidental or unwanted purchases on your device, authentication is required before any purchase is made using Google Play’s billing system from any apps available in the Kids section, even if you don’t usually require one. Use Google Play Family LibraryLearn more about passwords and authentication. You can share purchased apps, games, movies, TV shows, and books from Google Play with up to 5 other family members once you set-up Google Play Family Library. Learn more about family library. Give feedback about this article