http://whatisthematrix.warnerbros.com/
"Enter Flash Version"
Click that. You will see a panel at the top of the screen. At the right hand side of the panel there is a yellow button. Click. To the right of the text "HTML Version" is a little square panel. Click to reveal a button. Click.
Another panel comes down covering that one. Open the panel.
This is where you enter the binary access codes. This is not the hackthematrix.com part. Nor is it the part where you enter the text codes. Of which I know all. It's in the HTML code. Easy.
Try a few binary combinations until you find one that lights up the green light, and click enter. I highly recommend 11010100. [Thumb]