3 ms·
So in the article, the author was able to find the x- and y- coordinates of the other user. What if the target user lives in a high rise building, is there any
by 3PercentMan 6y ago
So in the article, the author was able to find the x- and y- coordinates of the other user. What if the target user lives in a high rise building, is there any technique you can get the height of the said user? Makes me wonder how the law enforcement is able to tri-angulate the suspect's exact location.
- rkoten 6y agoMy somewhat educated guess would be that, firstly, cell tower triangulation includes altitude by necessity of measuring directly the reach of electromagnetic waves, whereas Telegram advertises the subset of users' GPS data that they choose to advertise, which is likely just lat-long. Secondly, law enforcement also likely has the cooperation of the administration of said high-rise building.
- swiley 6y agoThat's going to be pretty distorted (likely uselessly so) in a highrise unless you're connecting to the "femto cells" (I think?)
- Nullslash 6y agoAuthor here. No, that is called z-coordinate. It's not possible to get z-coordinate by just finding the distance between me and the user.
- taneq 6y agoYou can certainly triangulate in three dimensions, IF the distance displayed is the 3-dimensional distance rather than just the distance between two lat/long locations. You just need to sample an additional point that's not collinear with the first two.