Ah, why this thing wasn't there when we were in school ??
Could have come handy during exams
Of course it has the wow factor, but some drawbacks as well.
It might be of limited practicality in my opinion.
For starters, you couldn't use them while driving, in a high security area, or any office really.
You have a Google glass on and you are walking on the street. You bump into someone.
"Oi beta, chokhkhe dekhos na ?"
"Are bhai, chokhkhe ektu beshi-e dekhi to, tai apnare shamne dekhini"