TikTok user notkahnjunior figures out people’s birth dates through the psuedo-privacy of the internet. People give her their TikTok profile, and she takes it from there.
@notkahnjunior Replying to @knoughpe ♬ original sound – kahn
No special tools required. Just web searches coupled with interactions among those who don’t know or care about privacy on the internets. It seems too easy. But it is also entertaining.