I think the technology is too early to build useful stuff with. Even Word Lens is using the wrong form factor and that surely affects adoption. As for killer a

I think the technology is too early to build useful stuff with. Even Word Lens is using the wrong form factor and that surely affects adoption. As for killer apps ? Ad blocking . Reading other people's faces and body language. Maybe even an interpersonal assistant/teacher. A better way to externalize memory and achieve a perfect photographic memory. Maybe useful tool for people doing hobbies and DIY, including cooking. Also, some platforms are useful without a killer app(like browser extensions), to solving many small/niche problems and thus helping people achieve a sense of control.