The Web site is searchable by offender name, county, zip code and school district. Additionally, all sex offenders must register any change of residential address, place of employment or enrollment in a school or institution of higher education and Tier III offenders may be subject to community notification. The way sex offenders are classified is one of the changes mandated by the Adam Walsh Child Protection and Safety Act, which was passed and signed into federal law in Now, both "child" and "youth" are used, with youth being someone 13 and above and child being 12 or under. Online visitors can also sign up to be notified by e-mail when a sex offender moves within one mile of their address. Features of the app include: Tier III offenders must register with the county sheriff every 90 days for life. Since , the Task Force has conducted more than 1, presentations to over 75, people around the state of Ohio. The Shaq Shield encourages parents and children to pledge with Shaq to establish and follow guidelines on using the Internet. Shaq Shield is a free iPhone app that provides parents with the tools and knowledge they need to protect their children from online predators. The best defense against Internet predators is parental involvement. With nearly all children now using the Internet and cell phones, the probability of them encountering an unsolicited sexual advance has greatly increased. Project Shaq Shield is encouraging parents to take ownership of their children's Internet activities. An additional update in the eSORN database is the verbiage used for the description of the victims of sex offenders. Previously in the State of Ohio, convicted sex offenders were classified as sexually oriented offenders, habitual sex offenders or sexual predators. Tier I offenders must register with the county sheriff at least once annually for a period of 15 years.