Alter-ego will exist in the digital world

Steven Lisberger : writer
Tron is the story of a computer programmer (Jeff Bridges) who gets converted into data and sent into an action-packed computer game where he must destroy an evil supercomputer.
Tron gained a massive following among technogeeks. And although we don't literally get transported into virtual worlds, it did predict computer games, anti-virus software and the allure of the digital alter ego.

Tron (1982)