Your Samsung Weather App Is a Fingerprint

TL;DR: for each location a weather forecast is requested for, a sub-city–precision location hash ID is sent. If a user asks for multiple locations, the combination of hash IDs can become unique. The article doesn’t say the app sends GPS coordinates, but it says the combination of locations requested can be unique to a user, even without an account. It can be inferred that this, combined with IP-based geolocation, would allow rough tracking of users’ locations.

Using a VPN would obfuscate location tracking , but not the fingerprint.