The town has started posting photographs of certain convicted sex offenders on the town's Web site.

This online registry is one way that Irondequoit and other municipalities are using Megan's Law to spread information about sex offenders who may still pose a risk to the public.

New York's version of Megan's Law requires most convicted sex offenders to register their addresses with local law enforcement agencies and the State Division of Criminal Justice Services. They must also report changes of address after their sentencing and any prison term.

Irondequoit is now posting the photographs of level-two and level-three sex offenders on its Web site. The state considers these people to have a moderate to high risk of recidivism. The registry provides the exact address of offenders who were convicted of the worst crimes.

Greece and Brighton have a similar online registry. Carlos Garcia, a spokesman for the Rochester Police Department, said the city follows state guidelines about notifying residents of the presence of sex offenders, but has no online registry.

He said it is possible that the practice may spread to the RPD.

"It wouldn't surprise me if, in the future, all area police were doing it," he said.

There are currently 12 people on Irondequoit's registry.

Irondequoit Police Chief Richard Boyan said the department will keep going door to door to notify residents who live near convicted sex offenders.

"Our goal is to keep the community informed," he said.