Some experts say gathering information on users moods is a privacy risk.

Not everyone agrees that emotion-tracking software is a privacy risk.

Its not just the music industry that wants to know how you are feeling.

Someone listening to music through headphones, looking happy.

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Some companies are using softwareto gauge employees moods, and its raising ethical questions.

“But many employees wont see it that way.

Will I be penalized if my mood is consistently low?

Someone using a tablet PC with headphones in a dark room.

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Will this information go in my employee file?

Will teams and individuals with low moods be let go?

Software even can identify personality traits.

“Certain applications can even examine users breath, such as the ones that track sleep.”

Your feelings also can also be revealed through apps that use a camera, Pisani said.

For example,Realeyes' software can monitor emotions from users' faces.

“This is beneficial for users who prefer to have their decisions made for them.”

But, she pointed out, “most apps are not made for maintaining a users health.”