the only time it would need to be near the center console is if you did not start the car in time after entering it. You have 15 seconds after you unlock the doors with the keycard to get in and start the car. After that you need to touch the card to the center console behind the cup holders, you then have another 15 seconds to start it. After it is started there is no requirement to leave it there.... this requires you ... leave it in the center console to operate the car.
With all the being said, the phone as key or a traditional fob would be easier than dealing with the keycard.