The Chrysler keys (with the metal key "inserted" inside the keyfob) is the influence of Mercedes (when they owned Chrysler), that's the way Mercedes keys have been since the late 90's. "Basic" models require that you put the "key" into the holding place - I believe there is an infrared reader that matches the key to the car - "loaded" models now have KeyLess Go - which means that the doors can be unlocked/locked and the car started when a "key" is within 3 feet of the car (hence my warning in my previous post).