So while I was out yesterday getting some final supplies to complete my Fuel Pump Hotwire (which was a great success btw

) i stumbled across a cheapish Engine Start/Stop Button. Couldnt resist so i bought it. looks quite simple to install but im not going to just yet as i want to do it in a certain way.
now, from my understanding, you can wire this baby up so that once your key is in the Acc Position, you just press and hold the button and it starts.
but thats stupid to me cause it doesnt take much to switch the key that half an inch more to start it like a normal car.
what i want is like what i have here at work with the Liberty GT's and 3.6R's not a keyless entry. i dont care for that much, although it would be nice, a way that all i need to do is disarm the alarm and sit without needing any key, press the button and start.
or a proximity feature where the car WONT start unless you have the key in the car with you.
anyways help, advise? tips?
cheers peeps