The details behind Star Wars: The Force Awakens have been one of the most tightly kept secrets in recent film history. Turns out that the secrecy was promoted on the set. John Boyega explained that producers posted posters during filming that reminded the actors to keep all of the details quiet. Carrie Fisher took one of these secret posters as a keepsake from her time on The Force Awakens.
During an interview with U.K. host Graham Norton, Boyega and Fisher talked about how tight-lipped they had to be during this entire process.
"It was so crazy that we were told for so long not to say anything, now when I'm asked a question, I'm not sure what I can say. During filming they had posters up saying, 'Loose lips sink star ships,'" explained Boyega.