Who Owns Transaction Information?

Although I usually couldn’t care less about celebrity gossip, I was very interested to see this article (in the India Times, no less!), TomKat threaten to sue baby store over leaked shopping details. Basically, these two celebs claim a right of privacy and a violation of their right of publicity because a store they shop at has been blabbing the details of their purchases. I’m interested in this because back when I was writing one of the early articles about digital certificates, The Essentia