If you’re a Disney movies fan, ( I’m a self-confessed fanatic of Disney movies eversince I was a kid too, even up until now that I’m already in my mid-twenties).. Anyways, when you’ve watched (or have a re-run) of your favorite Disney movies, you might have missed something that has been hiding in a lot in these animated Disney and Pixar movies.. Or maybe you have seen it many times without you realizing it : A113.
This code, a combination of a single letter and numbers has been appearing in Disney and Pixar animated movies for years. An online movie enthusiast searched and scoured these movies and came up with plenty of those who have the hidden message aka A113.
Look!
The Diver’s camera in Finding Nemo…
Mater’s license plate in Cars 2…
Code for the Abandon Earth Protocol in WALL-E…
The Simpsons
A box in A Bug’s Life (Look there, in the left!)
Mater’s license plate and a train on the movie, Cars.
The Coordinates of Mr. Incredible’s cell in The Incredibles
The Courtroom number in Up!
Even on Andy’s mom’s car license plate!
Above a doorway in the movie Brave, (tho it is written in Roman Numerals)
The Simpsons again 
The Iron Giant
The Brave Little Toaster
A tag on one of the rats in Ratatouille
American Dad
The Princess and the Frog
A door in Monster’s University
The Avengers
Lilo and Stitch
Now you’re probably curious as to the meaning of this ‘seem to be’ secret code….Well here it is guys, the story behind A113.
As quoted on the Pixar Wiki website, A113 refers to a classroom number used by character animation students at the California Institute of the Arts. Many of its alumni (including Pixar staff) have used the number in their professional works. It is said to appear in some way, shape, or form in every Pixar film.” By putting “A113″ somewhere along the film, the animators are able to give a nod to the other people doing what they do. Totally cool!
Here’s a photo that supposedly shows that classroom:
