All DDK door's passwords
1=Enter "HEAD" to open the Chief's Room door.
2=Back to Main Entrance. To unlock this door enter "NEWCOMER".
3=In B1 Hall, input "LABORATORY" to unlock the door.
4=Back to Computer room, insert your Key Card in the key card device. Regina will call Gail for help. After that, you have to use your DDK Disc and enter "ENERGY".
5=In Rest Station room, enter WATERWAY to unlock the door.
6=In the room were you enter the B2 chips 1 and 2, there is a DDK door. Unlock this door by entering "STABILIZER".
7=In the Parts Storage room there is also a door. Enter DOCTORKIRK to unlock this door.
Here are the the two registration numbers you need for the ID Card:
Secuity Pass Room keychip code
0392-Access code for Key Chips in Security Pass Room