Every dream-maker in the movie, Inception, uses a totem to tell if they are in a dream or the real world. The totem is a small object they carry with them and is supposed to have certain properties (Cobb's top always spins, Arthur's loaded die always lands on right number, etc...) that makes it easy to know. Nobody else is supposed to touch another person's totem.

A fan theory is that Cobb's real totem is his wedding ring and not the spinning top since the wedding ring appears in dream scenes, but not real world scenes.

I want to test that fan theory.

• Are there known dream scenes where he has no wedding ring?
• Are there known real world scenes where he does have it?