My two cars are a Ford and a Mercury. If I lock my keys/dog/cat/kid inside one of them, I just punch the combination on the door keypad and it will unlock the vehicle.
I'm actually surprised that other car companies haven't followed suit and put keypads on their cars. Whether in the summer sun or below freezing, drenched with rain or covered in ice the keypad hasn't failed. I guess Ford has worked the bugs out of the system by now, since they've had the keypad for many years.
It's nice to be able to open your car/trunk without having your keys or lock your car with arms full of groceries just by leaning into a couple of buttons.
I just push a button on my key chain and not only does the car unlock itself, it opens the door for me. It’s so easy...my 5yr old does it. lol The keypads are convenient but they are ugly. Sorry. :(