During our research into dating apps (see additionally our focus on 3fun) we looked over whether we’re able to recognize the place of users.
Previous work with Grindr shows that it’s feasible to trilaterate the area of the users. Trilateration is a lot like triangulation, except so it takes into consideration altitude, and it is the algorithm GPS utilizes to derive your local area, or whenever choosing the epicentre of earthquakes, and makes use of the right time(or distance) from numerous points.
Triangulation is more or less exactly like trilateration over quick distances, state lower than 20 kilometers.
A number of these apps get back a bought listing of pages, frequently with distances into the software UI it self:
By supplying spoofed locations (latitude and longitude) you can easily recover the distances to these pages from numerous points, then triangulate or trilaterate the info to come back the exact location of the person.
We created an instrument to work on this that brings apps that are together multiple one view. With this particular device, we could discover the location of users of Grindr, Romeo, Recon, (and 3fun) – together this amounts to almost 10 million users globally.