Teamup Traitor Item Suggestion: T Mark and Database Eye

[BaneOfGiygas]

I just realized that this also paves the way for something really dirty and dastardly: Blackmail. Threaten to reveal the identity of your fellow traitors unless they give into your demands. This exponentially increases the potential for inter-traitor relationships, though maybe in a good way? Maybe not? There's no real way of telling for sure without throwing it in there and seeing what happens.

but how to reveal that someone is a traitor without exposing yourself...

Well, you know that they (more than likely) have traitor gear. You can stun them and lock them up/turn them into the brig and present their gear as evidence...or, hell, you can even present your own gear as "evidence" if you don't mind losing it (or plan on stealing it back later). You could also shout threats over the radio and inform security that there's a traitor that almost tried to kill you, maybe using your gun to make some convincing firefight sounds, and so on and so forth.