Can the police enhance the photo to read my plate number after it is overexposed due to PhotoBlocker?

The answer is NO.

THE POLICE CANNOT ENHANCE THE PHOTO! If the positive image is illegible, the negative image will be EQUALLY illegible. Merely looking at the negative image cannot improve the legibility of a license plate. If you can't see the faint dark letters in the positive image, then you won't see them any clearer as faint white letters in the negative, or vice-versa. There are certainly ways to enhance the contrast to try to amplify and clarify subtle gradations, but they have nothing at all to do with checking the negatives.

Additionally, if they tamper with the picture, the evidence is not admissible in a court of law. They will not spend the time and money to enhance a poor quality image.

Visit the PhotoBlocker™ official website