In a #WindowsVirtualDesktop (#WVD) environment you can configure that a user needs to confirm if a session should be shadowed but the user cannot see if the shadowing is finished. That’s why Matthias Schlimm (@MatthiasSchlimm) wrote a tool that gives the user a indicator that his/her session is being actively shadowed. 

via Freeware Tools für den Digitalen Arbeitsplatz – Login Consultants