It allows computing devices to measure the distance to nearby Wi-Fi access points (APs) and determine their indoor location with a precision of 1–2 metres using round-trip delay.
At present the list of the certified routers contains only the following models:[4] With accurate indoor position awareness, apps can perform advanced automation based on where a device is in a building.
[5] Navigine tested the performance of the Wi-Fi RTT technology and made the conclusion that, subject to the specified requirements, the obtained result exceeds the declared values.
Apps using round-trip delay time (RTT) need the location permission, and the device must have location-based services enabled at the system level.
The following devices support Wi-Fi RTT technology: Xiaomi, LG Corporation, Samsung, Google Pixel, Poco X2, Sharp Aquos.