What is a wearable computer and what can it do that laptops can ?
A. Wearable computing facilitates a new form of human–computer interaction based on a small body–worn computer system that is always on and always ready and accessible. In this regard, the new computational framework differs from that of hand held devices, laptop computers and personal digital assistants (PDAs). The “always ready” capability leads to a new form of synergy between human and computer, characterized by long-term adaptation through constancy of user–interface. The formal definition, given by Webster encyclopedia, may be found at http://wearcomp.org/wearcompdef.html Q. Why do wearable computers typically use a head mounted display (HMD) rather than a hand-held or wrist-mounted display? A. The HMD allows the apparatus to be used with less conscious thought or effort. For example, even when you are not engaged in the activity of using the apparatus, it may signal to you, as with Xbiff, to let you know you have mail. This is possible because the device runs continuously,
