Smart phones have replaced cameras, calendars, pagers, telephones, torches, books, alarms and what not. Ever thought about a device that can replace this irreplaceable device?! No? Well, look at the title again :)
Spoiler alert: It will be 7 to 9 years. But it will happen and 'traction will begin in around 5 years.
Who wouldn't want a full function smart phone on their wrist if it weighed a couple of ounces and did everything (and whose power lasted a full day)?
Can't wait, right? But will have to.