In the US, Google is beginning to use an age estimation model to detect whether Account users are under or over 18. Google is looking at a “variety of signals already associated with a user’s account” to determine their age, regardless of the user-provided birthday. This includes the “types of information a user has searched for or the categories of videos they’ve watched on YouTube.” Another signal is the longevity of the account. If the machine learning-powered model estimates a user is under ...