Monac
Member
Under federal law, the US Government is prohibited from maintaining a list of gun owners or list records of who owns a specific gun. Many states also have similar laws; my home State of Florida does, although statutes allow the buyer and seller to maintain a bill of sale with buyer/seller and gun info.
Photography or videotaping of individuals purchasing firearms could possibly be interpreted as assembling a list of guns owners, hence the dealer may have posted such a sign to discourage an invasion of privacy and violation of anonymity the laws provide for gun owners.
Thanks, SterlingBullet. That is the closest anyone has come to a specific reason for this seller's claim that taking pictures at his table was prohibited by Federal law. But as others have suggested, it sounds like his own personal, and rather extreme, interpretation of a law. I think his odds of getting anyone prosecuted that way are slim to none. Ejected from the show? Yes, certainly. Put behind bars in a Federal prison? Fat chance, IMO.