In April 2012 Google published a first video study on its Google glasses illustrating how a typical day could look like owning this device. Recently Google received the official approval from the federal communications commission (fcc) which is needed for all wireless devices. However, the official entry at the fcc under the ID “A4R-X1” reveals only very little information about the device itself. What is known is how the glasses transmit audio information to the ear. This is not done by classical headphones but by stimulating the headbone which transmits this vibrations directly to the inner ear. This concept is not new, however, in 2011 Google patented it in connection with its glasses.
For transmitting data to a mobile control device Google glasses uses WLAN 802.11 b/g (2,4 GHz), Bluetooth and Bluetooth Low Energy. Most of the information of the device at FCC is kept under lock, this is because Google is highly afraid of competitors (such as Microsoft which is working on its own on such a device) and that they might get earlier to the market. Even pictures of the user manual will be published only in half a year.