"Idesia's technology is based on dynamic electro physiological characteristics of the living body," the company says. What? Basically, the company says that environmental and genetic factors give everyone a distinct cardio pattern. The electrical signals given off by the heart beating can be used in authentication. The company says it is superior to other biometrics--it has a 99 percent accuracy rate in field tests--and readers can be incorporated into notebooks, laptops and other devices. (You touch a sensor with your finger and the cardio information is extracted from there). Aladdin Knowledge Systems will make a peripheral for a PC sometime in 2007.