The S.T.A.R.S. Key is a key item featured in Resident Evil 3: Nemesis.
The Emblem Key can be found in the evidence room, but it is locked in the locker box by the four-digital password. The password can be seen, using the computer in the Main Hall.
S.T.A.R.S. office on the second floor can be opened by that key. The locked door initially reads next message: "It's locked. You'll need the S.T.A.R.S. Key to unlock it." The plate near the locked door reads "S.T.A.R.S. Office".
This key can be discarded after opening the S.T.A.R.S. Office, using the system message, that appears on unlocking.