Program for hidden remote access?

Question

System administration

You need the most suitable and, if possible, free program to get remote and anonymous remote access to the device. I need it for communication between two computers, the main one of which will be constantly monitored. They will follow the processes in the dispatcher, what is happening on the screen and for me personally. It is necessary that my person can also see what is happening on my screen from another device, but that it is not detected. I really hope you can help me choose!

Answer 1

Disable radmin icon, rename process.

Answer 2

It seems to me that there was a similar question here recently ...
There are such programs, of course. Moreover, I would generally deploy a demo of the system that we have - there is just one client for free (it has been running since 2015, even admins still don’t know about it :)). But I do not understand the legal side of the issue.