How this would work  This policy involves an active disclosure campaign, through websites and the newspapers, where a sex offender has their name, their photo, their address and the nature of their crime published on a website, or in the local media. It may include poster campaigns about individuals for particularly serious crimes, with the aim of both informing people and causing shame. It may be sensible to allow the police to not disclose the information in the following circumstances; 1) where a significant risk of vigilantism exists, 2) where it is against the wishes of the victim, and 3) where it may jeopardize an ongoing criminal investigation. Early studies showed that Megan's law in the United States had high rates of voluntary compliance, between 70 and 80% and rising, proving that the policy is practical1.  1 Simpson, Rachel, ''Megan's law' and other forms of sex-offender registration', NSW Parliamentary Library Research Service, Briefing Paper NBo. 22/99, November 1999,