Items can vary in level, from level one to five in most instances. The codes can be found in many places such as in game YouTube video updates, as well as the Niantic Investigation Board. Passcodes occur as an Alpha Numeric string in varying lengths.
Passcodes can be entered via the game in the OPS area using the passcode tab.
Intel Map UseEdit
They can also be entered on the Ingress Intel Map online using the passcode link above the location search in the upper right hand corner of the map. Overuse of either of these will result in overheating and a time limit will be set before further use can be had.