You may be better off going to the Dashboard (by clicking on the little house icon in Ignition, aka LogMeIn Client), and checking near the top of the "Dashboard" panel for something like one of the following:
- "The host computer keyboard and mouse are currently active"
- "The host computer keyboard and mouse have been inactive for 5 minutes"
- "The host computer keyboard and mouse have been inactive for 2 hours"
This is how I determine if I can safely remote into a computer, without disconnecting someone else.
BTW, I've found that it will show "...currently active" until it has been idle at least 5 minutes. I've never seen it say anything less than 5 minutes. That's good so there's a small buffer between user sessions.