Other things that could get you on the registry include visiting a nude beach in California or being an 18-year-old high school student with a 17-year-old girlfriend and having your sexual activity discovered by a vindictive parent (that last one will get you the bonus bar of shame of criminal activity involving a minor). The registries are rather blunt tools and also end up doing things like making getting housing difficult (there was a news story I saw in the 90s about an encampment under a freeway in Florida as it was the only place people on the sex offender registry could legally live in a major city (I think Miami but this was 30 years ago). A more recent story in Chicago pointed out that a restriction on sleeping on the CTA would cause homeless people on the registry to end up being unable to meet the terms of their parole). I don’t really have much sympathy for child sex abusers, but if people are such dangers to society that they can only live under a freeway or will be reincarcerated on unavoidable technicalities, something is very wrong.