Can you measure a wifi signal between two phones? https://www.makeuseof.com/wifinanscan-measure-distance-phones/ https://www.makeuseof.com/wifinanscan-measure-d

Can you measure a wifi signal between two phones? https://www.makeuseof.com/wifinanscan-measure-distance-phones/ https://www.makeuseof.com/wifinanscan-measure-distance-phone... Or if you can limit it to newer iphones, I think their special UWB antenna lets them accurately sense direction and distance to an Airtag. Some newer Androids have this too but the ecosystem is immature compared to Apple's. Edit: I think the pet industry also makes radio frequency pet trackers that don't operate off GPS or cell, just a tracking collar and a handset that tells you range and direction. Maybe they can wear one of those along with your app? It's probably easier / more accurate with the right hardware than trying to shoehorn it into an average phone...