You’d have to be a computer wizard, the Expedition uses a chipped transponder key and an Passive Anti Theft Deterrent System in the steering column which is a sensor that looks for the chip to start the vehicle. This works with the gauge cluster circuit board as well as main ECM. If you ever ripped the black part off the end of your key or just had a copy made of it the truck would never start as there is a little chip in there that the sensor is looking for. Personally I’d pass, a truck deserves to be started with a key. I feel girly push to starting big vehicles lol.
Also the Expedition keyed system will crank the engine on its own until it starts itself. No holding the key in run position required. Try it out. Just put the key up into the start position and let go, it will crank until it starts. I never hold the key up there to crank like an older car, all you have to do is click it there fast and it does it’s thing which is pretty nice.