Is there a way to sort computer by inactivity or user login time?

I'm sure there's a way to do this in Powershelll or Azure, it just seems like Splashtop is so close to having this feature.   It already knows when a computer has been inactive, and it knows the last boot time.   My main purpose is for finding computers that aren't being actively used and doing updates when the user is away.   Also just security.