[AshamedCaptain]

> In fact, I would guess that Google can predict your age with good accuracy without you logging in.

My Google account is almost 20 years old at this point, and they still ask me for credit card verification every time I want to see an "age-restricted" video in YT (and "age-restricted" topics apparently includes Verilog programming).

Google can't predict anything.

[hulitu]

They know your age. They just want your creditcard and a confirmation that it exactly you ( else they need to trigger the profiling algorithm for a new person).