© AFP/Beto BarataA member of the Avaaz online community organization wears a "Snowden" mask in Brasilia, on February 13, 2014.
Former intelligence contractor Edward Snowden emerged from his Russian exile Tuesday in the form of a remotely-controlled robot to promise more sensational revelations about US spying programs.
The fugitive's face appeared on a screen as he maneuvered the wheeled android around a stage at the TED gathering, addressing an audience in Vancouver without ever leaving his secret hideaway.
"There are absolutely more revelations to come," he said. "Some of the most important reporting to be done is yet to come."
Snowden, a former National Security Agency contractor who has been charged in the United States with espionage, dismissed the public debate about whether he is a heroic whistleblower or traitor.
Instead, he used the conference organized by educational non-profit organization TED ("Technology Entertainment Design"), to call for people worldwide to fight for privacy and Internet freedom.
Internet creator Tim Berners-Lee briefly joined Snowden's interview with TED curator Chris Anderson, and came down in the hero camp.