A teleprompt system allows a speaker to look naturally into the audience/camera while hiding the fact that they are reading a script.
The most common telepromptor equipment I see for my shows are “presidentials”, which have a small profile and do not pull the audiences attention from the presenter.
The presenter supplies their script to the teleprompt operator, who then runs it in a word-processor like application that allows the script to be scrolled at the pace of their speaking (this is a very simplified explanation/description).
– Troy @ TLC