Carpal Tunnel Vision
from ID Systems, October, 1997, page 10

Interval Research Corp., located in Palo Alto, California, was recently
granted a patent for a device that can be surgically installed beneath a
layer of skin; its liquid crystal display is close enough to the surface to
be visible. According to a recent article in Business Week, the device
contains a tiny control chip and is powered by an ultrasmall battery that can
be recharged by holding the wrist near an external charger. Using the device
would incur no health risks, said a researcher at Interval. 

Though the list of applications at present is not yet extensive, Interval
notes that if biosensors were installed and connected to the device, it would
be possible, for example, to monitor the body temperature and blood pressure
of a patient with heart disease. More uses will probably emerge in time.