We’re on the beginning of a disruptive change on UI.
We can guess it just looking at this interesting MIT project related to new User Interface paradigma, WUW – Wearable Gestural Interface.
But, if with Web User Interface paradigma there are cultural differences and diffidence, i.e. Arabic or Japanese culture vs. Western culture, with this new interface will arise the new one, gestural kind of.
Just think how we use the gesture for communicate and how many different meaning of a particular gesture we have within different cultures.