I recently went on a trip with my RPi several hundred miles from were i live and i was surprised to see that when i ran bluetoothctl then devices it still showed devices from my house

device list

device list at my house

It is possible but extremely unlikely that they have the exact same device list as i have at home but, as i don't think they do what would cause this behavior?

Top picture is there bottom is at my house.

  • 3
    I believe the system caches known devices. Jun 20, 2016 at 18:26
  • 3
    Second that. I think if you check /var/lib/bluetooth you should find records of all the cached devices. See: stackoverflow.com/questions/17580347/…
    – goobering
    Jun 20, 2016 at 18:36
  • 1
    Third that. My phone does this; if I check under "bluetooth" I get a list of everything I've ever paired with and not deleted. Or else, presuming you are old enough to remember Maximum Overdrive, you might want to check behind you...under the chair...in the next room... Who made who?
    – goldilocks
    Jun 20, 2016 at 19:44

1 Answer 1


You are seeing those devices because your raspberry pi is keeping a record of all the devices you have ever paired with.

  • This is a weird feature, why does it list devices that are not able for connection? How is it possible to list devices that are actually avaiable?
    – sydd
    Aug 2, 2022 at 15:48

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