HTC One M9 - Manual (Page 102)

Video chat and phone calls
Video chat
Face Tracking
Want the other party to always have you in view? While doing a video chat using a third-party app,
Face Tracking focuses on your face and others around you, and tracks faces that are within the
camera's angle of view. Face Tracking can track a maximum of 4 faces.
1. Open your video chat app, and then tap to open the menu.
2. Tap to turn on Face Tracking. As other people around you enter the front camera's field of
vision, each person will appear in a window on the other party's video chat screen. Your
camera will zoom in or out to keep the faces in focus when you move.
3. Drag the mini-window anywhere you want.
102 Video chat and phone calls