Microsoft wants to get a read on you...in more ways than one.

Microsoft has applied for patents for a system to better target ads at you based on your mood, facial expression, tone of voice and even your movements.

The application says Microsoft envisions being able to tailor ads to people by scanning their social media posts, watching their facial expressions with built-in cameras and gauging their tone of voice by using built in microphones.

The application gives the example of delivering ads for vacations if the system detects you're happy, instead of pitches for diet plans.

Microsoft also envisions using its Xbox Kinect sensor to read people's body movements as another indicator.

Creepy? No question, but don't freak out just yet.   Presumably you'd have to give your permission to be tracked like this, and patent applications are not reality.  Often it's just pie in the sky stuff that engineers dream up.

However they do give us some indication of what might be on the horizon. If you think advertisers are learning too much about you today...wait until tomorrow.