So the exact same triangulation vulnerability exposed and subsequently fixed in every dating app? How is this not Step #2 after “Build a dating app that Match Group will eventually acquire”
Not just dating apps, but really _any_ app with location based chat. Telegram hit the top page of HN a few months ago with a similar vulnerability[0]. There's other apps that sell this as a feature! Snapchat does this and you can see people down to the exact corner of the street they're standing on. Ads (used to) allow you to do it too[1]
[0] https://www.androidpolice.com/2021/01/05/telegrams-people-ne...
[1] http://adint.cs.washington.edu/ADINT.pdf