Apparently the Rubix cube was Snowden's idea, but didn't actually happen: http://www.indiewire.com/2016/07/snowden-oliver-stone-joseph-gordon-levitt-comic-con-1

Apparently the Rubix cube was Snowden's idea, but didn't actually happen: http://www.indiewire.com/2016/07/snowden-oliver-stone-joseph-gordon-levitt-comic-con-1201709654/ http://www.indiewire.com/2016/07/snowden-oliver-stone-joseph.... He did, however, hold a Rubix cube as a way for Greenwald and Poitras to identify him in an early meeting. http://www.cnet.com/news/edward-snowden-and-the-rubiks-cube-meet-up/# http://www.cnet.com/news/edward-snowden-and-the-rubiks-cube-...!