Christopher Nolan's Inception centers around a single computing technology: the dream-sharing device. While Nolan already draws a connection between the invasion of privacy and people's ultimately autonomy and control over their self identity (further described in the in-depth analysis section), on a deeper level, Nolan leverages this device to suggest that the penetration of technologies into people's lives can blur the line between free thought and engineered belief. 

When such technologies exist, people lose the ability to distinguish what is real and what can be architected and designed by external forces. In Inception, Cobb is seen constantly spinning his totem, checking to make sure definitively he is in "reality." Even the audience is forced to consider what is real, especially given Nolan's choice of placing Cobb's arrival in Limbo to save Saito at the beginning of the movie.