DNA analysis to identify dog owners who leave a mess

The idea of creating a database of dog DNA to clean the public areas does not seem to be new. A Freakonomics article in the New York Times (another link), a remarkable 12 year old girl's proposal, and Vienna and Dresden have proposed the same idea.

The idea is pretty simple. Firstly make sure that every dog is licensed. During this licensing process, the DNA can be collected through the saliva of the dog (existing dog owners' dogs can be included perhaps the next time they go to a vet). The data can be stored in a database. Now if a dog owner decides to leave the mess behind, the dog dirt can be collected and DNA analysed. A suitable fine should be imposed and sent to the dog owner's address.

I do hope that the health of our children can be protected with this simple idea. No more risk of blindness. The initial cost may be high but it will be a fraction of the cost of setting up the equivalent for us humans.