I realised, you don't even get any card in the Dolphin route? (BC fainting and interogation)
Inputing the code just removes the green keycard lock, but there's still no way to get the blue one.
I tried every door, before and after inputing the code, I just can't find the blue card.
Like I said, Prethzy's not in the Dolphin route, you just talk to the BC, he tell's you either the boss is coming or speaks about drugs and then you do the code...