I wonder how it will work. The article sounds like it just overrides the print screen button. But what about screen recording apps like OBS? Seems like Teams would need to inject some code deep into the os to block that.
I assume there are provisions for the same thing in all the other supported systems. Everyone without such support will get no video on the affected meetings.
My guess comes from the fact that KeepassXC turns black/totally transparent when viewed through a VNC server on windows.
Edit: here it is https://learn.microsoft.com/en-us/windows/win32/api/winuser/...