Iris recognition, palm-vein, fingerprinting: Which biometric is best for healthcare?

Iris recognition is just one in an emerging field of biometric technologies — others include palm-vein, fingerprinting and facial recognition — for identifying and authenticating patients. While the different forms of biometrics each have pros and cons from various perspectives, some healthcare executives have reached a conclusion applicable to them all: If patients don’t like a particular technology, they will refuse to use it — and then what’s a health system to do?