How can I hack things using the eev in splinter cell chaos theory [pc]?

How can I hack things using the eev in splinter cell chaos theory [pc]?
I know how to scan things such as computers, retinal scanners, etc. After scanning I can see different symbols but how can I hack things such as computers and retinal scanners from a distance using the eev? please help…

Best answer:

you can’t, you have to physically approach them. Which is annoying as fuck!