The nation's largest public Wi-Fi network launched in Harlem Tuesday, eventually offering free outdoor Internet access to thousands of residents and visitors on 95 blocks.

Mayor Michael Bloomberg says it's the latest step in creating a comprehensive Wi-Fi zone across all five boroughs.

Tech advocates praised the newest effort to increase Internet access, saying that a wireless Big Apple is key to sustaining the city's future.

The privately funded initiative will give 80,000 residents free wireless Internet access for at least five years.

Harlem's Wi-Fi zone will be bordered on the west and east by Frederick Douglass Boulevard and Madison Avenue, and the first phase will stretch from 110th to 120th streets. Access will increase to the north between now and May, when the zone will stretch as far as 138th Street.

"Creating the nation's largest continuous Wi-Fi network is a big step toward the administration's goal of making New York the No. 1 digital city in the nation," Bloomberg said.

He added that the Harlem zone is an important complement to Chelsea's free Wi-Fi area and others across the city.

The need for Wi-Fi is growing as businesses and residents increasingly rely on online data through their mobile devices, according to the mayor. He pushed for the growth to continue after his term ends.

Glenn Fuhrman, who funded the Harlem Wi-Fi zone with his wife, Amanda, said there is strong interest from investors. "Many people who I know are New Yorkers and want to make things better for everyone as much as they can," he said.

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