New documents for the glasses show they will use vibrations to generate sound so people can still hear noises from their surroundings.
Google Glass seem to keep adding new applications of advanced technology. Last month, a patent was filed for a virtual touchpad that is used to control the device, and now new documents filed with the Federal Communication Commission (FCC) show that the glasses will rely on bone conduction technology rather than headphones for transmitting sound.
Wired reports that they refer to an “integral vibrating element that provides audio to the user via contact with the user’s head”. Vibrations are sent directly through the skull from the headset, which rests near the ear. This causes sound to be generated without the need for traditional headphones or earbuds, so it won’t block out sounds from the world around you.
This technology would be especially useful for people listening to directions from the glasses, as they would be able to hear them without being in danger of missing out on the sounds of other road users heading their way.
Developers will be receiving the Explorer Edition of Glass (which costs $1,500) later this year and a commercial version is expected to be launched in 2014.