Level 1 (Science) - code: WPI - Found by getting the periodic table of element letters from the numbers in the poem.
Level 2 (Technology) - code: 349 - Found by reading the outlet. Told to you by bolding the letters on the computer which you log unto using the password in the vhs player.
Level 3 (Engineering) - code: RWB - Found on the map of the bridge. Told to you by the picture of a bridge pieces.
Level 4 (Math) - code: 137 - Found by solving the math problems and putting them in order.
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