The iKey Ak-39 Wearable Rugged Keyboard is designed to be used by the military, and it is worn on your wrist and designed to withstand all the elements.
It can be used in very harsh environments and stand up to electromagnetic interference, water dust etc, and it meets the MIL-461 military standards.
The AK-39’s small-footprint design features essential components for military and public safety applications, including an integrated Force Sensing ResistorTM (FSR) pointing device with left- and right-click functionality, and adjustable green LED back lighting that is also available in a night vision (NVIS) compatible configuration. Designed with gloved users in mind, the AK-39’s snap-on faceplate eliminates accidental key strokes and can be easily removed to clean the pad.
There is no word on pricing or availability as yet, or whether it will be available to us civilians as well as the military.