There are reports that removing the pats thingy from a key and placing next to the ignition switch works- of course if your car is stolen, the insurance company will refuse to pay
I f you got a ECM from a junk yard but no key-then you will have to haul your car down to a Ford dealership that can reprogram the thing- be aware not all dealerships have this capability. Oh bring ID and proof of ownership
Car thieves would like to know too...that is why there are carjackings these days