I get the sense that biometrics are not very future proof. People leave fingerprints and DNA on everything they touch and faces and eyes are seen by cameras all the time. Biometrics work now, but in the near future I suspect the technology to take images of peoples faces/fingerprints and reproduce their likeness to fool a biometric sensor will be a commodity. Once that happens biometrics will be near useless because you essentially have no way to respond to leaked biometric data, it can't be changed.