Kryptonian Command Key

Clark Kent, an alien of a now extinct race disguised as a bystander of our kind is forced to reveal his true identity when Earth is invaded by an army of survivors who threaten to bring the planet to the brink of destruction. When Clark enters the alien ship, he uses a Kryptonian command "control-key" from the ship that brought him to Earth, which allows him to communicate with the preserved consciousness of Jor-El in the form of a hologram. This is one of the screen used keys seen on screen and also features the iconic Superman “S” logo meaning "hope" which was taken from Mark Waid's "Superman: Birthright" comic where the S-Shield is the Kryptonian symbol for "hope", and Superman created the concept of the Shield being a Kryptonian herald for the house of El. Waid explained: "I thought it was a family crest, but if it was, it certainly came to mean more than that to these people. Wars were fought over it. Entire cities were built on it...it became a promise. A sign of people fighting to make a better world. A symbol of hope."