liu-xiao-guo@localhost:~$ sudo /snap/bin/bluez.bluetoothctl
[NEW] Controller 00:00:00:00:5A:AD localhost.localdomain [default]
[NEW] Device F8:16:54:D0:35:8F ubuntu-0
[NEW] Device 24:71:89:06:97:86 CC2650 SensorTag
[bluetooth]# pair 24:71:89:06:97:86
Attempting to pair with 24:71:89:06:97:86
[bluetooth]# agent on
Agent registered
[bluetooth]# default-agent
Default agent request successful
[bluetooth]# scan on
Discovery started
[CHG] Device 24:71:89:06:97:86 Connected: yes
Failed to pair: org.bluez.Error.AuthenticationFailed
[CHG] Controller 00:00:00:00:5A:AD Discovering: yes
[CHG] Device 24:71:89:06:97:86 Connected: no
[CHG] Device 24:71:89:06:97:86 RSSI: -58
[CHG] Device 24:71:89:06:97:86 TxPower: 0
[CHG] Device 24:71:89:06:97:86 ManufacturerData Key: 0x000d
[CHG] Device 24:71:89:06:97:86 ManufacturerData Value: 0x03
[CHG] Device 24:71:89:06:97:86 ManufacturerData Value: 0x00
[CHG] Device 24:71:89:06:97:86 ManufacturerData Value: 0x00