Amazon files a pay-by-selfie patent while Microsoft's own face authentication languishes

Amazon filed for a patent on Tuesday that anticipates a future where users simply smile for the camera to authorize an online purchase. It begs the question, Why isn't Microsoft already doing this? 
Amazon’s patent in question simply uses image-authentication technology to identify the user, with some motion thrown in to verify the user is alive and well and not a photo-identical mannequin used to fool the system. It sounds very much like... Windows Hello.To read this article in full