Not sure whether to post here or chit chat.

Sources:

http://www.news.com.au/story/0,10117...1-1242,00.html
http://www.theinquirer.net/?article=25317

EVERY fine issued by speed cameras could be invalid, after the Roads and Traffic Authority admitted yesterday it could not prove the authenticity of the pictures they take.
The case revolved around the integrity of a mathematical MD5 algorithm published on each picture and used as a security measure to prove pictures have not been doctored after they have been taken.
The lawyer argues that the known flaws in MD5 resulted in the prosecution being unable to guarantee that the picture had not been tampered with.

Now I hate speed cameras because I think their placement on motorways etcetera is simply for revenue generating (I've never had a speeding fine btw). I think they should be used in towns where a reduction in speed would have a definite effect on road safety. My joy at the prospect of these cameras being taken down was tempered as the guy being let off was speeding outside a school. The place I think speed cameras should absolutely be placed.