I've found most of the bypass things to be desperately easy - much easier than the minigames in ME1. They give you a ton of time to do the shape-matching one (just take it slow and check to make sure you're doing the proper pair each time).
As for the code fragment matching... I do it a bit like cloud gazing. A combination of eyeballing big chunks of purple or white, and projective stuff like one code fragment looks like a gun, one looks like a spaceship, etc. Works wonders.
i tried that without the trainer first and it wont let me click on the text that match, when i tried it with the trainer all it did was freeze the screen and i could not click on anything. so now i am stuck from progressing through the game, i am at this tower on horizion and cant hack the computer to contact someone forgot who. maby someone who has a save game to get around this glitch would help me please. thx