Subway / David Munshi's PACE laboratory | Collectibles in SOMA Game SOMA Guide and Walkthrough

The first hidden hint - access code to the doors.

Here you will find a computer, from which you will have access to a number of emails - there's nothing to send here this time though. In the upper drawer of the desk there's a note - check it out to find a access code (2501), which will be used very soon. Put down the note, open the middle drawer and read the article - afterwards head towards the nearby door.

Most of the nearby doors are locked - you can only enter the small room on the right side of the hallway, when you will find a couple of photographs hanging on the board, at the other side of the room.