Fitbit to Schumer: We don't sell perso..

Privacy • Senator worried that company could sell data from fitness-tracking devices.

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Albany, N.Y. • Fitbit, the maker of a popular line of wearable fitness-tracking devices, said Friday it does not sell personal data to advertisers, contrary to concerns raised by U.S. Sen. Charles Schumer.

The San Francisco-based company spelled out its privacy policy on its website after Schumer warned of a potential "privacy nightmare" relating to concerns that the makers of fitness monitoring devices could sell users' data to advertisers.

Schumer has called for a federal regulation to require companies like Fitbit to let customers prevent their data from being sold. On Friday he praised the company for "revising" its policy, even though Fitbit CEO and co-founder James Park said there's been no change in the company's practices.

"It has always been our policy not to sell user data," Park said in a statement. "We have never sold personal data and we do not share personal data unless a user specifically directs us to do so, or under the limited exceptions described in our privacy policy."

Those exceptions include credit card processing or when the company is under legal obligation to provide the information.

Schumer said there are no federal laws to prevent other companies from sharing personal information from the devices. He called on other manufacturers of wearable devices to follow Fitbit's lead.

Many Americans wear fitness bracelets and monitors or use mobile apps to monitor their activity.

Fitbit to Schumer: We don't sell personal data