Glass connects to the internet using Wi-Fi hot spots or, more typically, by being wirelessly tethered to mobile phones. Pictures or video can be shared through the Google+ social network.
Google co-founder and chief Larry Page depicted Glass as part of an ongoing effort to get computers "out of the way" so people can focus on lives enriched by what the internet has to offer.
"We want to make sure we are building experiences that make people really happy," Page said while speaking about Glass.
"We are relying on you to make happy users," he told developers at the conference. "Ultimately, I think a lot of your experiences will move to Glass."
Google executive chairman Eric Schmidt said recently that it will take "a while" before consumer versions of Glass are available.
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