A Drone for Neck Stretch / drone

Many white collars always sit in front of their laptops for a very long period of time, which is really bad for their back, shoulders and neck. Therefore, I’d like to use a drone to guide people making different neck movements in between work hours.
When the drone flies, the user’s line of sight moves with it to exercise their necks. A camera below the drone can automatically identify the completion of movements through facial identification. After each relaxation exercise is over, statistics of the user’s motion recorded by the camera on the drone will be automatically sent back to the mobile phone APP for recording and analysis.