Passcodes are often found in materials released by Niantic Labs via Google+ and YouTube, though some of them are well-hidden. They are also sometimes shared among agents. An agent can only use a particular passcode once. Each passcode has a limited number of agents that are permitted to use it, so when you get one, use it quickly. Some passcodes, such as those printed on item cards handed out at anomalies or printed under the caps of HINT water bottles, can only be used by one agent.
You may get an error message when entering a passcode:
- Passcode invalid: You probably entered the code incorrectly. Check it and try again.
- Passcode fully redeemed: The maximum allowed number of agents have already redeemed the code.
- Passcode circuitry too hot. Wait for cool down to enter another passcode: You’ve entered too many passcodes to quickly. (This only appears to occur on the intel map.)