I know a few other countries have this, but in order to get access you have to have "reasonable suspicion." Not sure how reasonable suspicion is defined, but I know it's not as simple as "I heard from a friend of a friend that X's Dad is on the sex offenders registry, tell me if he is"

My worry about this is that the sex offenders registry's don't differentiate between a 3 times convicted pedophile who diddles 5 year olds, and the 19 year old who slept with his 17 year old girlfriend and her parents pressed charges.