Richard Errington clicked to stream a science-fiction film from his home in Britain last month when YouTube carded him.
The site said Mr. Errington, who is over 50, needed to prove he was old enough to watch “Space Is the Place,” a 1974 movie starring the jazz musician Sun Ra. He had three options: Enter his credit card information, upload a photo identification like a passport or skip the video.
“I decided that it wasn’t worth the stress,” he said.
In response to mounting pressure from activists, parents and regulators who believe tech companies haven’t done enough to protect children online, businesses and governments around the globe are placing major parts of the internet behind stricter digital age checks.
People in Japan must provide a document proving their age to use the dating app Tinder. The popular game Roblox requires players to upload a form of government identification — and a selfie to prove the ID belongs to them — if they want access to a voice chat feature. Laws in Germany and France require pornography websites to check visitors’ ages.
called for new rules to protect young people after a former Facebook employee said the company knew its products harmed some teenagers. They repeated those calls on Tuesday in a hearing with executives from YouTube, TikTok and the parent company of Snapchat.
Critics of the age checks say that in the name of keeping people safe, they could endanger user privacy, dampen free expression and hurt communities that benefit from anonymity online. Authoritarian governments have used protecting children as an argument for limiting online speech: China barred websites this summer from ranking celebrities by popularity as part of a larger crackdown on what it says are the pernicious effects of celebrity culture on young people.
“Are we going to start seeing more age verification? Of course,” said Hany Farid, a professor of engineering and computer science at the University of California, Berkeley, who has called for more child safety measures. “Because there is more pressure, there’s more awareness now, on how these technologies are harming kids.”
But, Mr. Farid said, regulators and companies need to proceed with caution. “We don’t want the solution to be more harmful than the problem,” he said.
say some websites need to take additional steps to verify their users’ ages when the services collect sensitive user data.
An update to the European Union’s rules for video and audio services requires sites to protect minors, which may include checking users’ ages. In response to the change, Google said last year that it would ask some users of YouTube, which it owns, for their identification documents or credit card details before they could watch adults-only videos. A spokeswoman for Google pointed to an August blog post where the company said it was “looking at ways to develop consistent product experiences and user controls for kids and teens globally” as regulators applied new rules in different countries.