I have this on my car, all you need is the key in your pocket, and like the other guy said press the button on the handle to unlock the car, this also works on the passenger side and also the boot! Press the little chrome button on the outside of your boot to unlock your car, quite handy when you have shopping etc when you don't want to get the key out of your pocket! You need never get your keys out agin!

mine is a 2005 t-spec 4.0v6 in the UK