ZKLP system allows apps to confirm user presence in a region without exposing exactly where

Computer scientists from universities in Germany, Hong Kong, and the United Kingdom have proposed a way to provide verifiable claims about location data without surrendering privacy.

The technique, referred to as Zero-Knowledge Location Privacy (ZKLP), aims to provide access to unverified location data in a way that preserves privacy without sacrificing accuracy and utility for applications that might rely on such data. It's described in a paper [PDF] presented this week at the 2025 IEEE Symposium on Security and Privacy.