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User profile for user: lisandra20 
lisandra20 Author
User level: Level1 1 points
How can you find out who is logged into your device
Mass-Storage Management Software
Posted on Apr 11, 2022 7:13 AM
Question marked as Top-ranking reply
Posted on Apr 11, 2022 1:10 PM
You can't find out who is logged in.
Check your device list to see if there is a device signed in that you don't recognize. You can remove the device using the steps in the article below. As a precaution, change your password.
Apple ID device list -Check to see where you‘re signed in. *
ASC YouTube for How to reset your Apple ID password
What to do after you change your Apple ID or password - Apple Support- I suggest doing this before you change your Apple ID or password.
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User profile for user: Eric Root 
User level: Level10 684,429 points
Apr 11, 2022 1:10 PM in response to lisandra20
You can't find out who is logged in.
Check your device list to see if there is a device signed in that you don't recognize. You can remove the device using the steps in the article below. As a precaution, change your password.
Apple ID device list -Check to see where you‘re signed in. *
ASC YouTube for How to reset your Apple ID password
What to do after you change your Apple ID or password - Apple Support- I suggest doing this before you change your Apple ID or password.
Link
User profile for user: Michael Black 
User level: Level10 80,388 points
Apr 12, 2022 1:43 PM in response to lisandra20
The system has no way to determine who is using any AppleID. All it knows is the AppleID used and whether whomever is using it knows the password and can authenticate the AppleID. There is no way for any remote system to know who is using any login ID if the user is able to successfully authenticate the login ID.
That is why is is imperative to use strong passwords, to never share them with anyone, and to use two factor logins with every system that offers such a feature.
Link
How do you know who is signed into c your account
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