Having been a major case manager involved in homicide investigations, I would say that one of the features of having a registry, obviously, especially in Ontario's case, is that in searching for a missing child by querying the registry and utilizing its geo-mapping features, you can identify the first 12 to 15 doors to where you want to dispatch police officers to make a verification, to see whether or not that individual is home, where the individual has been, etc. As alluded to earlier, that eliminates persons of interest in order to advance an investigation with the best possible speed and efficiency.
On April 21st, 2009. See this statement in context.