Looks like logistics is a main application field for wearable computing. Here is the next computer for the logistics business.

The HX2 computer is a small, light-weight data collection computer designed to be worn on an operator's arm or waist so that both hands are free to more effectively and efficiently perform warehouse inventory moves, including piece picking to carts, containers or conveyers; case picking; parcel moves; and broken case activities.

The HX2 wearable computer also includes LXE's ToughTalkTM technology. ToughTalk technology is LXE's specialized combination of LXE's trademark ruggedized system design, advanced audio circuitry and noise canceling techniques, which enable the HX2 wearable computer to support today's industrial-grade voice recognition applications.

But it's a tough computer too:

It has to be to survive the tough work environments in which it will be used. The HX2 wearable computer's magnesium alloy front and impact-resistant screen are designed to keep the unit in service and out of the repair shop.

No idea, maybe they use it to scan soldiers in the field too? Then it has to be tough ;-)