A1: You press sqaure when the numbers on the bottem light up

A2: You can use your EEV to hack keypads

A3: Press the square button,when a number comes in the box light up.
get three codes from left to right then hit the x-button.
[24][45][52][empty].to the right of this is a No of codes you need do.
if theres 4 codes it automatically does it for you when you cracked it.
it usually only gives you 3 codes to get.
that means in one visit one attempt to get 3 codes.
if you mess up press the TRIANGLE BUTTON,this stops the hack.
and alarm sounding,as above that box is the time limit indicater.
you can go back to the door or comp later to re-do it.
but you must first go to a check point go through,then turn around and
go back to the previous check point to your door or comp.
you can also hack another door or comp,then return to the door or comp
you messed up with.