This system does not require the driver to use the key or press any buttons on the remote to unlock or start the car. The car continuously polls the surrounding area to see if the key is in range. If the key is in range it will transmit its ID and the car will determine if it is the right key.

If the answer from the key is valid and confirmed as correct by the car, the car will unlock and allow the car to be started by pressing the start button on the dash.

The whole procedure require no interaction by the driver, and the "key" can remain in a pocket or bag the whole time