or an antique? I own a 1964 Cadillac and so it appears to me that it would be really difficult for a criminal to get away with license plate fraud (why would a criminal commit a crime in a 1964 Cadillac?)
Think about it...your license plate is in plain view. Anybody can read it, so what are you protecting yourself from by obscuring it in a photograph? Access to vehicle registration records is protected by privacy laws. The average person or criminal can't look up your information using your license plate number.