In China, they have an AI that scans your face when you open the age restricted games to verify your identity. However this appears to be geared to appeal more towards western app users since it sounds more like a voluntary thing:

>"TikTok announced a number of changes for all users, including the
ability to set customized screen time limits for each day of the week
and allowing users to set a schedule to mute notifications. The company
is also launching a sleep reminder to help people plan when they want to
be offline at night. For the sleep feature, users will be able to set a
time, and when the time arrives, a pop-up will remind the user that
it’s time to log off."

So, smart phones are causing people to develop ADHD like symptoms? Is this why ADHD diagnosis has gone up and why there's a shortage on the meds for it?