Wearables get their killer app: saving you from killer viruses

Every wildly successful computing platform gains that success because of a “killer app” — a software category or usage model that compels people to embrace it en masse.

Spreadsheets for the PC. Cameras for the smartphone.

Wearable computing as a generic category has chugged along for years as mere toys for geeks without a killer app that makes everyone want or need one.

While 75 percent of Americans own a PC of some kind and 95 percent own a smartphone, only 20 percent own a wearable device.

But that’s about to change.