Mass Effect 2 Message Board  

On some levels you have to 'hack' in to PDA's, computer's, and safes.

Has anyone been sucessful in doing this?

Yup, they're easy. What you have to do is to match 3 images in the order they give you. One of the reasons why the fonts are different colors is because it lets you match them easier. It's basically just matching pictures. Use your direction keys to move your current selection and left click when you think you selected the matching "code" (picture). You have to navigate around the red boxes with the X on them though.

I was surprised at the limited in game prompts on how to do this. I kept trying to use the mouse and arrow keys to do this.

You use the WADS keys, and when you're on the matching image, you hit space bar, just navigate around the Red X's.