The Hilton hotel is running a trial of wearable computers that allow staff to perform check-in and other duties away from reception.
The devices, designed by Xybernaut, have a flat touch-screen display, a portable printer, mobile credit card processor and room key encoder.
The system is being tried at the 3,432-room hotel at Waikiki Beach in Hawaii, and the company will use them in other hotels if the trial proves successful.
Similarly, Boeing has introduced a central processor with a miniature see-through head-mounted display featuring a microphone and earphones.
The device is worn by engineers who crawl under and through aircraft, testing and repairing components.
IBM is also developing a computer that a uses a tiny, headset-mounted display and responds to voice commands.
The US military is testing new wearable devices for combat soldiers.
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