No registery needed
Landlords and employers have no need to know at the hands of anyone besides the individual. Law enforcement has no need to inform anyone. They already know who has been convicted and uses it in investigations; thus no need for a registry.
Law enforcement is not a public relations outlet, but there to serve and protect (take that how you want). It is bad enough there is law enforcement auxiliaries who inform neighborhoods with flyers, door knocking, etc, when someone moves in, but does NOTHING to inform anyone when someone moves out. They leave the fear mongering lingering in the neighborhood despite no need to. They are culpable for the attitudes generated just as much as those who do it for profit or power.