Multiple Wayland Servers

[nerdopolis]

Hi.

Just a quick quseion is how are Wayland servers identified?

In X we have the DISPLAY identifier, can be specified by an environment 
variable, or argument.

How is it going to specified in Wayland?

Also, what will replace xhost? its prevent one user from running an app in 
another users server to take a screenshot, or capture key codes, and at the 
same time allow wanted user accounts, like a deamon or something display stuff 
on the screen.