I don't know if you're familiar with the "Black Mirror" series. They're very hard hitting commentaries on our modern societies. One of the episodes (the first one of the second season) http://en.wikipedia.org/wiki/List_of_Black_Mirror_episodes#S... is about such a situation where a person is "brought back to life" using the "image" they've left on social media sites as well as on private digital archives (personal photos etc.). It's not too far from reality which makes it all the more disturbing. I highly recommend it.