Inception articulate some of the things that have been swirling around his head for the last eight years." DiCaprio and Nolan spent months talking about the screenplay. Nolan took a long time re-writing the script in order "to make sure that the emotional journey of his character was the driving force of the movie." On February 11, 2009, it was announced that Warner Bros. purchased "Inception", a spec script written by Nolan. Principal photography began in Tokyo on June 19, 2009, with the scene where Saito first hires Cobb during a helicopter flight over the city. The production moved to the
Inception April 2010, where Warner gave away promotional T-shirts featuring the PASIV briefcase used to create the dream space, and had a QR code linking to an online manual of the device. "Mind Crime" also received a stage 2 with more resources, including a hidden trailer for the movie. More pieces of viral marketing began to surface before "Inception"s release, such as a manual filled with bizarre images and text sent to "Wired" magazine, and the online publication of posters, ads, phone applications, and strange websites all related to the film. Warner also released an online prequel comic, "Inception: The Cobol