Marriott International Inc. was fined $600,000 (U.S.) by the U.S. Federal Communications Commission for blocking hotel customers from connecting to the Internet on personal WiFi networks in order to force them to pay for the hotel's networks.

Marriott employees blocked mobile "hot spots" at the Gaylord Opryland Resort & Convention Center in Nashville, Tenn., while at the same time charging consumers, small businesses and exhibitors as much as $1,000 per device to access Marriott's WiFi network, the FCC said in a statement today.

"Consumers who purchase cellular data plans should be able to use them without fear that their personal Internet connection will be blocked by their hotel or conference center," FCC Enforcement Bureau Chief Travis LeBlanc said in the statement.

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Under a consent decree with the FCC, Marriott must stop using WiFi blocking technology and file compliance and usage reports every three months for three years, the FCC said. Bethesda, Maryland-based Marriott, the world's second-largest publicly traded hotel chain, also will pay a civil penalty of $600,000.

In some cases, Marriott employees at the hotel's conference center used technology to disrupt customer WiFi transmissions and block Internet access. Marriott charged conference exhibitors and other attendees $250 to $1,000 per device to use the Gaylord WiFi service in the conference facilities.

Marriott Response Marriott says it did nothing wrong and it's the FCC's policies that need changing.

"Marriott has a strong interest in ensuring that when our guests use our WiFi service, they will be protected from rogue wireless hotspots that can cause degraded service, insidious cyber-attacks and identity theft," Jeff Flaherty, a company spokesman, said in an e-mailed statement.

The Gaylord Opryland protected its WiFi network by "using FCC-authorized equipment provided by well-known, reputable manufacturers," he said. "We believe that the Opryland's actions were lawful. We will continue to encourage the FCC to pursue a rulemaking in order to eliminate the ongoing confusion resulting from today's action and to assess the merits of its underlying policy."