Simple hand gestures can make a huge impact when you are speaking. (Photo: fotostorm via Getty Images) When you are talking to others, you may notice that you flap or wave a hand to emphasize a point.

Recent progress in camera systems, image analysis, and machine learning have made optical-based gesture recognition a more attractive option in most contexts. However, current methods are hindered by ...

We often see reports crediting the iPhone or Apple Watch with saving someone's life. People usually praise the latter for detecting an irregular heart rhythm or a fall. But one can always use the ...