Time-of-Flight technology 4 get distance from total time of packet’s round trip ڑ = (total time * speed- of-light(c)) / 2 2018.5.27 Google I/O 2018 Θ͍Θ͍ใࠂձ 10
protocol’s support of both Wi-Fi device and a mobile phone 4 location permission(ACCESS_FINE_LOCATION) 4 Wi-Fi scan available 4 no need to connect to the Wi-fi(using beacon packet) 2018.5.27 Google I/O 2018 Θ͍Θ͍ใࠂձ 16
MacAddress getMacAddress() long getRangingTimestampMillis() int getRssi() int getNumAttemptedMeasurements() int getNumSuccessfulMeasurements() available in Android Preview P(https://developer.android.com/reference/android/net/wifi/ rtt/RangingResult) 2018.5.27 Google I/O 2018 Θ͍Θ͍ใࠂձ 20