Five potential UX issues with biometrics (Econsultancy)
Biometrics are about people. Tom Stewart's post reinforces the point and highlights five "potential UX [user experience] issues" — negotiations, if you will — that take place between organizations that adopt biometric ID management technologies and end users.
In brief, they are: Privacy; Reasonableness; Proportionality; Fear; and Behaviour.
The validity of the framework he offers is supported by the observation that it can be applied to all sorts of identity management technologies, not just biometrics.