TikTok is adding a new daily screen-time limit for users under the age of 18 in an effort to get young people to become more aware of how much time they spend on the app. Minors will have to enter a passcode if they want to stay on the app beyond the 60-minute limit, the company said. #tiktok #screentime #screenlimit #wsj #wallstreetjournal #thewallstreetjournal | TikTok adds screen-time limit for users under 18