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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. – Steve Robillard Jun 20 '16 at 18:26
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    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 '16 at 18:36
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    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 '16 at 19:44
3

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

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