There's actually a dating app with a similar-ish concept called Happn (https://happn.com/ https://happn.com/), which basically is Tinder but if Tinder only show

There's actually a dating app with a similar-ish concept called Happn (https://happn.com/ https://happn.com/), which basically is Tinder but if Tinder only showed you the profiles of people you had actually crossed paths with in real life. Fun fact! Not exactly what you said but close!