Some aspects of the current sex offender registries in the United States have been widely criticized by civil rights organizations Human Rights Watch Virtually no studies exist finding U. registries effective, prompting some researchers to call them pointless, many even calling them counterproductive, arguing that they increase the rate of re-offense.
The Australian National Child Offender Register (ANCOR) is a web-based system used in all jurisdictions.
Unlike the federal registry which has an opt-out provision if an offender can convince a judge they are not a threat, the Ontario registry has no such provision.
As a result, individuals who have been convicted of a designated offence at any time after 2001, and relocate to Ontario, are obligated to register for a period of at least 10 years.
Sex offender registries exist in many English-speaking countries, including Australia, Canada, New Zealand, the United States, Trinidad and Tobago, Jamaica, South Africa, the United Kingdom, and the Republic of Ireland.