This is great--the ZyPAD by Eurotech.
A true wrist-mounted computer.
Rugged, wearable, ergonomic, GPS, bluetooth and Wi-Fi enabled.
Turns off when arm is down and lights up when arm is up.
According to Trendhunter, sales are initially targeting military, law enforcement, emergency services, and healthcare.
I can see this expanding to sales, delivery, production, warehousing, and loads of service-based jobs--such as in "may I take your order please?" or "how would you like to pay for that?"
Runs on Windows CE--ugh!
I'd like to marry up the function and operating system of an iPad with the fit and form of the ZyPAD and then I think we may just have a real winner!