I was talking with my mom today, and the conversation got around to the future of wearable technology. We found that we agreed very strongly on one thing.
It would be great to have an ordinary looking pair of glasses, with a little unobtrusive camera and a little unobtrusive display that does just one capability: When you are talking to somebody, it shows you their name.
Just think how much social awkwardness and embarrassment would be saved by this one simple innovation. I suspect that if it came on the market today, millions of people would buy it.