I traveled to Roblox's headquarters to do a demo of a new safety feature it says will help protect child users.

SAN MATEO, CA — At first, the messages seemed normal. Innocent, even. “Hi,” “How are u?” And then: “Do you want to make Robux?” To millions of kids who play Roblox every day, those words might seem ...

Chris Fields, CMO of AI-powered age verification start-up Yoti, giving a demonstration of the company's age verification technology at their offices in London. (Photo by HENRY NICHOLLS / AFP via Getty ...