"Waldo" (1942) is a short story by American writer Robert A. Heinlein, originally published in Astounding Magazine in August 1942 under the pseudonym Anson MacDonald. It is available in the 1950 book Waldo & Magic, Inc.. Both stories in that collection involve magic but are otherwise unrelated.
1942 original publication magazine cover
Telepresence refers to a set of technologies which allow a person to feel as if they were present, to give the appearance or effect of being present via telerobotics, at a place other than their true location.
A Tandberg E20 high resolution videoconferencing phone meant to replace conventional desktop phones
First Telepresence Systems in 1993 (TeleSuite): Englewood, Ohio to New York City
A modular telepresence system
American exile Edward Snowden participates in a TED talk in Texas from Russia via telepresence robot, March 2014