DNA Tracing Catches Criminals

A new book claims:

We found that adding anyone charged with a felony to the law enforcement DNA database in Denmark reduced future criminal convictions by over 40 percent. Again, people responded to the higher probability of getting caught by committing fewer crimes. Being added to the database also increased enrollment in school and rates of employment — signs that folks really were on a better path. This effect was largest for the youngest men, those ages eighteen to twenty-four.

That effect seems high to me.

I do believe that radical invasions of privacy are inevitable in the future. The criminal justice payoff is too large. Everyone's DNA could be registered at birth. Surveillance cameras could be everywhere, with face recognition. GPS tracking of everyone's phone and car. All money could be traced.