public AndroidBluetoothDeviceProximityProbe() { _bluetoothScannerCallback = new AndroidBluetoothScannerCallback(this); _bluetoothScannerCallback.DeviceIdEncountered += (sender, bluetoothDeviceProximityDatum) => { lock (EncounteredDeviceData) { EncounteredDeviceData.Add(bluetoothDeviceProximityDatum); } }; _bluetoothAdvertiserCallback = new AndroidBluetoothAdvertisingCallback(this); }