A look at efforts by countries, including the UK, EU, Japan, and China, and companies, such as Facebook and YouTube, to implement age verification checks (David McCabe/New York Times)

David McCabe / New York Times:
A look at efforts by countries, including the UK, EU, Japan, and China, and companies, such as Facebook and YouTube, to implement age verification checks  —  To protect children online, more companies and governments are forcing users to prove how old they are.