Marketing: PC vc Mobile

I had a classroom discussion today about the future of Digital Marketing - Will mobile prevail over PC marketing? Despite mobiles becoming as powerful as PCs and tablets (take the Atrix for example), they are still limited by their screen size.

Do we really need multiple devices depending on their screen size? One of the ways we can end that discussion is by removing the display from its physical entity, which would automatically free us from carrying around two or three devices. Here are three examples of a future free of a display screen -

1. Augmented reality contact lenses and glasses as predicted by Dr. Michio Kaku. (skip to 14.20)
   
   
   
   


2. MIT Media Lab's Pranav Mistry with his Sixth Sense Technology
   
   
   
   
   


3. Glass display using corning
   
   

What do you think the future holds?