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Deus Ex: Human Revolution Hints
How can I get through the east doors without triggering an alarm?
1 of 8: You'll need to shut off the laser grid and avoid the security camera's notice.
2 of 8: The laser grid has a dedicated terminal on the large gray electrical box that's to the left of the doors.
3 of 8: If you can't hack level 3 security, you'll need to find the security code.
4 of 8: It's on a pocket secretary on the floor.
5 of 8: It's next to a computer bank near the NW corner of the room. (It's where you took down the first of the guards.)
6 of 8: Pick it up and read it in the media logs menu to learn the code.
7 of 8: Return to the dedicated terminal and enter 6834, then set the laser grid to inactive.
8 of 8: Make sure the security camera is turned away from the doors, then quickly open them and go through.