Yes, they are encrypted. No, it may not be a HIPPA violation because they are not releasing names, but they are releasing a lot of other information. Some may call that a HIPPA violation/sensitive info and some may not. Doesn't matter, The county chose to encrypt them. There might be no exact reason other than that they can.
Each console has its own ID just like GTR said, It's not like that convoluted mess of the old system. I find it easier to track down RIDs that way.
Yeah, they are gone now, Replaced by Trunk Ops 1-6 I think. They prob got rid of them because no one ever used them on the old system.