Here is a very helpful video showing how a teleprompter works.
I find it extremely helpful.
http://www.gowallaby.com/how-does-a-teleprompter-work
Free teleprompter/autocue service. CuePrompter is a free teleprompter/autocue service. Your browser works like a teleprompter -no extra software needed.
TelePrompter
Yes, Obama does use a teleprompter for most of his speeches.
News presenters typically read off a teleprompter, which displays the script or text of their news story. This helps them maintain eye contact with the camera while delivering accurate and timely information to their audience.
It may be Autocue
The teleprompter was invented in 1950 by Fred Barton JR. The device was a created after the need to memorize large amounts of text in short periods of time arouse.
the whitehouse's teleprompter website
Teleprompter Operator
AUTOCUE is a device that displays words for people to read.ALSO Autocue is a UK based manufacturer of teleprompter systems. he company was founded in 1955 and patented its first teleprompter in 1962. This company is now in receivership.
The generic term is "teleprompter". There are several brands out there, but the Teleprompter brand was among the first, and the term is now coined to identify more of an item than a brand.
In a word, Yes.
My guess is Obama's teleprompter. http://baracksteleprompter.blogspot.com/