This article talks about how intelligent software agents might transfer between various “bodies” in order to achieve certain tasks. So you own “personal assistant” software might follow you around the house, making itself available as it incarnates itself in different technological artifacts. Spooky, possums.
See Wired News: The Seoul of a New Machine.
Resonates with the idea of a “familiar” or personal spirit that accompanies you through the day, assisting you when needed. Though, I guess, “guardian angel” might also be another analogous term.