[hackuser]

Couldn't you just identify the user by their logon?

[rtkwe]

It's been a while but I don't think the old iMacs at my elementary school had individual user logins at the system level. For things like the reading test program there was a login I think but not for the whole machine.

[ioquatix]

Bingo!

[kbenson]

You're assuming there were usernames and passwords. For consumer grade devices in decades past, that was not the norm.

[nebabyte]

"...

Damn it!"

[hackuser]

Fair point.

[ioquatix]

Haha :D