By law, in many states age verification is not supposed to be shared by security with the casino. That is your private information that is supposed to be used to verify your age only and kept secure and seperate ONLY for that purpose. To share that information would be a breach of the law and your privacy rights. Your act of willingly giving them your ID to obtain a players card is another thing all together different. If you are a professional AP full time black jack player I think the consensus would be to keep your ID private if at all possible until you either are forced to for whatever reason ( ie.. to cash in chips or something similar ). I play rated in several local casinos I frequent to play without getting hassled by the pit boss. I play, I win ( most of the time ) I get free meals, hotel rooms, discounted gas and free black jack and slot play comps. When I travel out of state to play at a casino I intend to really do my best to get as much money from them as I can I don't play rated so I can come back again and repeat unless I am asked to leave or told I can play other games, just not black jack. It all depends upon what you feel is more important to your future as either a hobby black jack player or a professional full time AP player.