I'd be immensely grateful if someone helped me know when the screen was last unlocked (much better a list of the last unlocks). With unlock I mean when you lock the screen then you have to unlock it by entering the password after the screen got locked. I guess this is registered in some log file or there's some Terminal command to get this. I don't mean log-ins (I know you can get that with the "Last" command).
Answered to me by User jmh - Ask Different :
If you go to the Console app on your Mac (it is located in Applications/ Utilities folder) and click on "Macs Analytics Data" which appears on the left side of the window. This report has a message "loginwindow" and is stamped with a time and has the word "screenlock" on the same line. I just locked and screen and then unlocked it and I got that message. You could grep out all the "loginwindow" terms and the "screenlock" terms. This should give you a list of times these events happened.
You can open past logs right-clicking "Macs Analytics Data" > reveal in finder
I guess this must be possible because, when you use parental controls and you set up a time limit for a user, if the user locks the screen, the time on lock screen doesn't seem to count against the allowed time, which seems to imply that lock screens are registered in some log file??
Any way to get last times a Mac screen was unlocked?
