This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
rssi read-only property of the
BluetoothAdvertisingData interface returns the power at which the device’s packets are being received, measured in dBm. This is used to compute the path loss as
this.txPower - this.rssi.
var rssi = BluetoothAdvertisingData.rssi;
The definition of 'rssi' in that specification.
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