Backdoor (Earth-5125)

"There's always another way."

- - Keymaker

Backdoors are programmed doors that, when unlocked, can grant access to any part of the Matrix.

Within the construct, they are numerous doors that can vary in color, shape and size, in seemingly endless corridors, which can only be unlocked by special keys designed by the Keymaker - mostly which are used by Programs to sneak from one place to another unnoticed by Assassins.