An anonymous messaging app ....
.... that knows its location and sends its location?? (Have I misunderstood this?)
A little machine learning can de-anonymise Yik Yak users, according to researchers from American and Chinese universities. Yik Yak is an anonymous messaging app that raised US$70 million, acts like a location-aware Twitter and has become a preferred tool of trolls on US College campuses. The researchers didn't attack the Yik …
I don't know anything about this app, but it seems like the messages are anonymous and don't send their location but the messages only get send to other devices in a nearby location.
Setting up a number of smartphones with fake locations based in a certain area you can do a sort of triangulation of where the message came from and then algorithms work out the likely building.
I might be wrong but this is how it read to me.
Well, I looked it up in the Unreliable Source, and I found this interesting paragraph:
"An update in August of 2016 in which the app mandated the use of profiles and removed anonymity was not well received by the user base, and it now has a "1 star" rating on the iOS App store."
So I'd suggest that it is, indeed, no longer a thing.