The film was originally titled "Rogue Drone". "UI" however focuses on the idea, that it is the core characteristic of a autonomous super-intelligence (technological singularity) that it lacks a user interface (U.I.) - which is why "UI - Soon We Will All Be One" won the race for the final film title.
Additionally, "UI" phonetically resembles you-I, which plays on the failed relationship between Kira and Alan.
The structure (artificial intelligence) is a ventilation shaft of the Arlberg-Tunnel in the Austrian Alps. It sparked the idea for the film, when some of the filmmakers discovered it on a snowboard tour.
The switch room was built as a physical set and for this friends, family and students from the Vienna University of Applied Arts gathered in the Wideshot Entertainment office over one weekend to screw 26.600 switches into104 perforated metal sheets.