Comment by westurner

Wi-FI RTT is more accurate than trilateration with RSSI but requires hw support.

IEEE 802.11mc > Wi-Fi Round Trip Time (RTT) https://en.wikipedia.org/wiki/IEEE_802.11mc#Wi-Fi_Round_Trip...

/? fine time measurement FTM: https://www.google.com/search?q=fine+time+measurement+FTM