numeric key pad starter kill

id like to install a key pad in all my vehicles so i could leave the keys in them this way i would never have to worry about loosing my keys or fumbling through a key chain with a dozen keys on it in the dark trying to find the right one, just simply  turn the ignition on, punch in a 4, 5 or 6 digit code and then start the car so i want the starter wire to be dead untill the correct code is entered. it would install just like a starter kill relay by cutting the starter wire in half and connecting each end to a relay. ive searched for somthing that would do this but cant find anything but theres got to be somthing out there, anybody ever see anything like this thanks

Years ago the KeyPad was a good seller.  Then it faded out.  CrimeStopper used to make a lot of them.  Now there are very few companies that sell them.

There is a Company called Asian Wolf.  I don't like their products, but they have what you are asking about.E-Bay:

http:///.com/KEYPAD-COMBINATION-STARTER-KILL-FOR-CAR-OR-CAR-ALARM_W0QQitemZ250078552248QQcmdZViewItem

MO

Don't Learn from Others Mistakes

You Might Be the One That Knows.

thanks alot thats perfect and the price is right i just ordered one to try it out if it woks good im putting them on all my stuff your the best