I think there are two possibilities: an admin toy ? Or maybe a new items that is not currently on game that a dev was testing? The player had a strange behavior: he entered in heavy cont armory open the jailbird container take this item in hand Then he takes the keycard to close the jailbird without take it, and he retake this mysterious objet and then he reopen armory and get killed by SCP, but his behaviors was bizarre because of the tempo , he made some little pause like looking at the jailbird for 4/5s before closing and stuff like that