Seriously, who needs to record someone without the knowledge of the person being recorded? That’s a big red flag, a perverted character, there’s no other explanation. Creepy Mark Zuckerberg allowed other creepy characters to share personal moments with him.
I have a friend who is absolutely obsessed with roller coasters, but many parks don’t allow you to wear a body camera (to say nothing of phones, you’re absolutely not allowed to hold a recording device). Like, this guy will ride the same coaster back to back for hours and will absolutely watch a recording. He bought a pair for this one purpose. I would not have bought them and he definitely felt extremely conflicted. I think he keeps them in a case at all times and only wears them when he’s about to get on a ride.
Basically, he only bought them as an action camera alternative. He doesn’t use any of their creepy social media features.