Push Button Start with Passive Device Key wanted

[matty b]

I set mine up using the Honda switch, an RFID alarm, central lock, and a few relays. The RFID unlocks the doors and powers up the Engine Start button as you approach. One press and release of the Start button powers up the accessories. Second press shuts them off. If you press and hold the Start button (I use a 4 second delay, it is easy to change) the starter engages. The second press and release kills the engine, or if I walk away, the engine shuts off and the door locks engage.

what are you using to do the switching for the ignition switch? I havent come across a setup like you are describing but I would really like to know what you used.