Sean Tierney hates photo radar. So he decided to think up a creative way to challenge the system and avoid a future ticket. Tierney is not covering up or altering his license plate in any way. And he’s not selling anything. Tempe high-tech businessman ordered a customized Arizona license plate of zeroes, O’s and D’s that blend together in a way that could make it confusing for a photo-enforcement citation reviewer to confirm the license plate. See the link for a picture of the license plate.