i wonder if two like minded people pass in public, is there a way phones\gadget would alert them??

only if they are both on a same app that has that kind of tracking capacity.. there were dating apps like that but idk if they still do due to privacy reasons

Imagine. His mind would be just as depraved. I'd be like... Wanna get a coffee? And he'd say... "Skip the coffee, it's been a long time" 😂