Sounds like you wan to work on a computer without the anyone in the room of the remote computer seeing. Simple solution is to turn the monitor off. If not possible, I would change the screen resolution to a ridiculous setting that you know the mon. Teamviewer id and password fields are blank, In this area, you will find your TeamViewer ID and your temporary password. If you share this information with your partner, he or she will be able to connect.
Teamviewer Id Blank Form
Teamviewer Shows Blank Id
That would be awesome... make it part of the regular inventory scans. We use TeamViewer also, and have it on over 100 pcs and laptops and currently have all the IDs and Passwords stored in our Teamviewer account. What would actually be really sweet is some sort of plugin that could scan for the IDs, then create a list with PC name and User Name, then maybe have a link that could open the Teamviewer connection in the Teamviewer software. I don't know if that's even possible, but seems like it'd be awesome.