With Apple devices, at least, the location of said devices is never reported to anyone other than the device owner. Apple uses anonymous Mac addresses that are

With Apple devices, at least, the location of said devices is never reported to anyone other than the device owner. Apple uses anonymous Mac addresses that are mapped on device to do their triangulation and they don't identify to other devices. Even if another devices were keeping a list of every device that attempted to connect to it, it would never get the same value twice nor would it get an accurate address so it would be functionally useless to anyone trying to collect it using that info.