[deckiedan]

I could imagine an 'off'/airplane mode with a visible red LED on top or something, which, in such a small device clamped to your glasses would be fairly visible, and hard to fake/hack.

Alternatively, some kind of wifi/3g blocker or jammer, could be the answer.

In some ways it might make sense to use a polite version of that, where devices would 'hear' a wifi SSID signal, or whatever, with a 'this is a private place, no creepiness, please' signal embedded in it. To stop denial of service, or only having official jamming, you could have that privacy signal location specific, with a Lat/Long GPS position, and then the whole thing signed against a central server (probably google, but a non-Profit would probably be ideal), so that people couldn't wander around with portable jammers.

Then shopping centers, schools, private homes, resturants, etc, could easily register for a code, plonk it on a jammer or other wifi router, and behold, an illusion of privacy.

If there were government regulation about devices having to obey such signals to be legal for use, then I could see it working.

[skyebook]

Maybe this is naive of me, but I don't really look forward to a future where I walk around making sure people in my vicinity are glowing red (or green, for when I do something heroic).. I realize that having some indicator is a huge plus over having nothing but it just feels so sterile. Perhaps this is as much a reaction to always-on everything, but there's something especially off-putting about taking the concept of eye contact and making it a consumable, recordable activity. Technology thus far hasn't really encroached on or been able to imitate this face to face interaction..

> Alternatively, some kind of wifi/3g blocker or jammer, could be the answer.

I know that in much of the US these devices are illegal, wouldn't be surprised about other places.