When they return to school in August, DeKalb County’s 100,000 students will encounter new restrictions on the district’s wireless Internet network.

DeKalb is taming the wild Web with new filters that will require every device to be registered, said Gary Brantley, the district’s technology chef.

When they try to surf the Web using school WiFi, students will encounter a registration page. To log on, they will have to use the unique identification number assigned them for lunch and other purposes, Brantley said. Some Web pages will be blocked by the filter. The new system replaces a password that was widely known and offered little security, he said.