Megan's Law

Megan's Law is an informal name for laws in the United States requiring law enforcement authorities to make information available to the public regarding registered sex offenders, which was created in response to the murder of Megan Kanka. It formed part of the inspiration for the International Megan's Law to Prevent Demand for Child Sex Trafficking, a bill that would require the notification of foreign governments when an American registered as a sex offender of children is going to be traveling to their country.

As of 2006, Argentina and Japan had considered sex offender registration but not passed a law requiring it. The United Kingdom and Canada tracked sex offenders for law enforcement purposes but did not make the registries accessible by the public.