In Resident Evil 2, the "Rodem" system can be accessed from a computer in the B5F computer room after obtaining the Lab Card Key. Upon entry, the room has been infested by a Giant Moth and its larvae, which must be defeated to use the computer. By using guest accounts, Leon and Claire are able to log into the system and register both of their fingerprints. Once Leon and Claire are logged into the system, they can use both of their fingerprints on a door lock in the B4F east area passage to gain access to the B4F culture room, where Birkin conducted various experiments.