the concept seems to be great and solves a real big problem.All the required technology and infrastructure exist and are available. The execution need to be good and this can really bring about some change in the world.
Face Recognition is an important domain of machine learning, where a lot of research is goes on, But still nothing of such an importance has ever been done.
This project focuses on functionality as core, and not just for fancy stuff(to unlock your mobile phone).
Keep it up guys!