Apple iLens Contact
If you search for iLens you will find another apple concept where contact lenses are used for photographic memory being able to take pictures, read information on lens, night vision, or even surf facebook. This new concept is similar to google glass however it is a contact lens so can be worn without others knowing and can even be used to change eye colour.
Google seem to be expanding into many new technologies, and this one is very exciting. At this point they have managed to control a monochrome ink within a contact which is revolutionary. This is the first step in controlling ink to make it truly digital. Maybe in the near future when they develop a full colour version that can be fully controlled, we will see billboards that can display video. Or could even have targeted messages to each unique person, tailored via their google cookies and history.