The age of privacy concerns continues, with the latest focus on all those popular fitness trackers.

The fitness tracker market has boomed, with total sales tripling in 2013 alone.  These handy-dandy wristbands can track everything from how many steps you take in a day, to your cholesterol.  These wristbands also come with WiFi connectivity to an app on your smart phone.

The concern now is what does the company do with the data after that?  Like many other widely used social technologies, there are no shortages of companies trying to monetize the data people willingly give them.  So if the company has your fitness data, can they sell that data to say, an insurance agency?  Yes.

Medical Privacy lawyer Deven McGraw says due to Obamacare health insurance companies can not use this data so the worry is not from health insurers, but others, "It's absolutely possible that information could be used by an insurance entity to discriminate against you but for health insurance purposes that's prohibited by federal law."

McGraw says she has not seen any evidence to suggest that these fitness tracker companies are selling your information but that doesn't mean it can't happen.

McGraw says there are no federal regulations on this data, which means it is up to the user to protect themselves, "When it comes to considering whether that data has any protections at all, it really is dependent on what the vendor offers.  You have got to read the privacy policy."