How to disable print

Sometimes when displaying confidential information we do not want people to be able to print a page. Is there a way to define page properties to not allow the browser/right click print function to work or alternately to embed something in the headers?

someone would print by either right-clicking to select ‘print’ or by using a hotkey like ctrl+P

you could restrict right-clicks with a plugin like this one:

and also restrict keyboard hotkeys with this one: