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Welcome back. the crash of the germanwings flight has re-ignited the debate about control. there's been technology developed that would let authorities on the ground intervene the there was a crisis in the air. boeing has a patent and google has conducted a test flight. why isn't it being used? tom foreman has the answer. >> reporter: boeing has a patent google has a test flight of one of these planes big tech names all over the world are looking at this idea of airplanes that can be flown remotely from the ground in the belief that this might make them impervious from terrorist attack, from c...

Bill: a good little jackson browne in the morning. you heard about google glass, how about google contact lenses? google has a patent with contact lenses for a camera inside. contributor for wired magazine. welcome here to america's newsroom. is this possible? can you make a contact lens where you can search the internet? >> right now it is theoretical. there's a patent google has for contact lens with a camera just below your eye. bill: se silly concept would be.

>> a documentary for your life. maybe continuous video. bill: you would blink your eyes, and what happens? >> what google is doing now with google glass. a google display over your glasses were they show you alerts or how you use that is voice activated. google contacts take a picture, start recording. they are trying to build technology to make it disappear. bill: voice activated? with the eye and the voice. it doesn't exist, but it is a concept. with this concept work the same way? >> that is the thing, everything is in theory right now. you look at the way technology

Progresses, everything is getting smaller and smaller and smaller. you need they cannot ability to broadcast something's to display on your phone, processing power. bill: you make excellent points about the way things are moving smaller and smaller. google says they can help diabetics. regulate their blood sugar. help somebody partially blind cross the street, what is that all about? >> in january google announced they have a side project, a google censor between two sheets of contact lens that detects glucose levels through the fluids in your eyes beaming it to your phone to tell you when you...