Simple modification: move the camera to a ring on the wearer's finger.
People think Google Glass is creepy because the camera in on the headset and automatically points at whatever the wearer is looking at, and it's not at all obvious where the camera aperture is, or whether it is recordiing at any given moment.
Put the camera in a ring on the user's finger, with a Bluetooth connection to the headset. Have a physical cover that covers the lens the vast majority of the time. Now it will be really obvious that recording is not happening the vast majority of the time, but the wearer can still grab an image of almost anything they want at any time.
Creepiness gone.
Your ignorance is showing.
Except, it is obvious when there is activity on the device. It isn't going to be clear which of the activities it is possible to that is actually taking place.
The prism lights up.
Preferably in black, unstylish eyeglass frames.
I don't want to advertise the fact that I'm wearing this thing. Google geeks may think it's the coolest status symbol ever. I don't. And I don't care. I want to use the map feature, get the weather report.
Yes, I know it can give me automatic Yelp reports, tell me who and what's around, get me dates, show me movies and deliver specs on my computer by looking.
I could care less. I'll use the maps. And the weather. Maybe news, if I'm waiting for a bus. If they want me to buy it, it has to be cheap and boring.
You have seen the frames for those needing prescriptions right? Only the US Armed Forces RCGs were less fashionable.
As long as there is a screen to light up, then it will be noticeable to a degree, with or without a camera.
So long as there are glassholes, google glass will not succeed.
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Unfortunately, google cannot control the people who use google glass, so there will always be glassholes and google glass won't succeed.
As an explorer, my experience is that the real glasshole is the ignoramus who assumes something that is not in evidence.
For the record, I am not saying that some Explorers weren't assholes. There were. But way more people just plain over-reacted out of ignorance than had justification for their fear.
And in their fear and ignorance, they named an otherwise nice person a glasshole; they did so not because s/he was a glasshole, but because they wore a Glass device. And the Glass device was the talisman that generated their fear.
Any programming language is at its best before it is implemented and used.