What is an Ingress passcode?
An Ingress passcode is a code that is hidden within the Niantic Project released documents. They can be found anywhere within what is released and then when entered either through the intel map or from within the application will generally give you a reward of Action Points (AP), Exotic Matter (XM) and some Resonators and XMP Bursters of various levels.
Unfortunately, I have already tried the most popular cheat codes and ‘godmode’ is invalid.
If you don’t like cheating then this may feel like cheating. It is all part of the game, the real cheating part is if you allow other people to find the codes for you. However, if you like cheating then you will enjoy the list of passcodes that is provided below.
To help you along your way you may want to use some Cipher and Decoding tools that can be found online.
A good community for decoders is DeCode Ingress. You can learn a lot by watching these people decode the media posted on Niantic Project.