I want to know which devices I have already connected to my computer with my ADB or know which computers I have connected to my phone previously. Either way works for me.
adb devices -l does not show anything important, because it only displays currently attached.
I would prefer a way without root (on phone), but will accept any help.
You can see which devices were authorized by you on your phone to interact with it through adb. You would need root access though.
Go into the directory /data/misc/adb/. There would be two files:
adb_keys shows the public key of the other device followed by its user@machine name format. The user@machine should tell you which machines or the users from other device tried to interact with your device over adb.
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 [email protected]
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 neon@neon
adb_temp_keys.xml also has the same information as in adb_keys file except that it is formatted in XML and also shows last connection time (in UNIX Epoch format).
<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<adbKey key="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 neon@neon" lastConnection="1616486869211" />
<adbKey key="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 [email protected]" lastConnection="1616487035512" />
Q & A