The blue player with the identifier was on day 2, for one, and yes, had it worked, and had that player moved over to the red team, well, I would have learned the player he targeted. But it didn't work. In the end, on day 2, I allied with a blue player, in effort to bring down the green team.
Stratos told me what he was, plain and simple.
What's really funny is that I told the blue player to look for a blue player with the identifier, so that if he landed on the red, we'd know an enemy, and if he didn't switch, he'd know a friend. He wanted to go for a green member, since that's what we were allied for, and, in the end, I said not to, because the person could've ended up on the green team, in which case, he'd know all the green players anyways.
I thought I'd put the story out there.
The end result? Player found the blue shell. Which was on the red team. :/