Being a certified autist with the additional bonus of having very bad eyesight, I can't stress enough how important and useful developments like these can be.
I am extremely poor at having face to face conversations. Mostly because any kind of body language completely escapes me. This has caused numerous situations of miss-communication and generally makes any kind of meaningful interaction with a human being unreliable at best.
Having access to an aid like this will certainly help improve matters for me and anyone trying to have a conversation with me.