Google has patented a hat with a built-in camera and speaker that uses bone conduction
Google recently received a patent, application for which was filed in 2013. The patent also describes headwear with built-in camera and speaker, working on the effect of bone conduction. In addition, the system includes a microphone and power source.
Product purpose related to the category of wearable electronics, is obvious: with it you can take pictures and videos, as well as to direct the video. In particular, the production employee with a camera on his head can broadcast the situation to the control center to receive instruction on how to act in a given situation.
Source: DP Review