Face liveness detection using face landmark points How to detect liveness of face using face landmark points? 
I am getting face landmarks from android camera frames. And I want to detect liveness using these landmark points. 
How to tell if a human is making a specific movement that can be useful for liveness detection?
One approach would be to obtain labeled ("yes/no") samples, e.g. via Mechanical Turk, it costs though) and approach it as supervised learning task. E.g. a neural network will discover itself through the learning what features (landmark positions) are helpful for detection.

There should be examples around for mood detection etc.