
Researchers have identified a loophole which allowed for ‘trilateration’ in popular dating apps including Bumble, Hinge, Grindr, Happn, Badoo, and Hily.
The team from Belgium's KU Leuven University specifically used a technique known as oracle trilateration’ to pinpoint a user’s location down to two metres. This took a profile’s displayed location as a rough estimate, then by moving incrementally away in three different directions until the profile is out of range, revealed the exact location.