We have a 7stop 2car group tac50/04 that the customer would like to add a card reader to the card and secure 3 floors. Seems to me the job had to be ordered with security from the factory and would have been sent out with a Security CNA card to do this? This job was not ordered with security as there are none of the car call lock out I/o’s. If the customer insists on securing the floors am I correct in my thinking that they will need new software and a CNA card? Anyone have any experience in adding security to a 50/04?