At least, not a traditional physical key that goes into an ignition switch that you then turn to start the engine. Instead, you get a transmitter fob carried in your pocket or purse and there’s a button you push on the dash to start the engine. Some of these buttons don’t even require that you press them continuously until the engine starts. Just touch them lightly, once and the computer will then spin the starter until the engine fires. Pretty neat! Some of these systems also make it possible to start the car’s engine remotely, too so you can warm the car up on a cold day without having to go outside to do it.
Forget about reaching under the dash and cutting a couple of wires, then splicing them together (or, if you had an old Ford, running a wire from the remote-mounted starter solenoid right there under the hood to the car’s battery). If the car’s computer doesn’t receive the right code from the transmitter fob the one electronically keyed to it the engine will not start. Some systems are even smarter than that: The computer will disable the ignition circuit if someone tries to do an end-run around the transmitter fob.