Good on them! I remember in my Masters program contemplating gesture recognition with sign language. Ultimately I went with proving people are who they are base

Good on them! I remember in my Masters program contemplating gesture recognition with sign language. Ultimately I went with proving people are who they are based on their body language; but this was number 2 on the list. Does anyone know what techniques they are using to accomplish this? I did the changes in Active Appearance Models, converted them into 'sound files', then ran them through Microsoft's HTK Markov Model system to get my stuff. In theory, they might be doing a similar thing.