Supreme Court - Producing IDs to police
I am completely bias on this issue since my brother is a police officer. If I remember this case correctly the police officer could definatly approached the situtation better but ultimatly I do think you should give your name when asked by a police officer. I don't really see how it is a big privacy issue nor how it could possiblity be considered a voilation of the "Fifth Amendment right against self-incrimination."
I don't remember and the article doesn't say if this overturned the 9th Circuit Court's decision but I wouldn't be surprised as then get turned over regularly.