were about 10 years away
1 processing power - voice recognition is a must for this to work. its just hittimg phones but it uses the internet to actually decode your voice and its just barely at prime time. the only one i really like is ms sync
2. screen thickness were really close.
3. heat from required processor (problem for everyone)
4. the mother of all issues. battery life and size + heat again a by pdoduct of the operations
battery size and life is the #1 issue we dont know how the **** to fix in tech. if you want to see where we should be go to drudge report or google ces read your email on your glasses.
some form of this tech has been attempted over the last 5 yrs.
20 yrs it will be projected onthe back of your retna. if we dont blow each other trying to bleed power out of one of string theory's higher dimensions. or the area geographically known as Germany stops developing watches cars beer and solar panels. anf attempts to conquer the world for a 4th time. rome, ww1 ww2. what is it with that area? the water? its like they have to be tinkering with some highly structured complex process, and creating cool things tothe world or the add kicks in and there like **** lets go mess with other countries.

please note thr above comments were made im jest and were for entertainment purposes only