plus your biometric data may change over time. what do you do for those unfortunate edge cases where someone has an eye infection or a skin rash?
plus it costs a lot more to install, maintain and verify.
plus you can 'steal' someones biometric data without their knowledge (eg. from coffee cups, pictures etc.) without any real defense short of never opening your eyes or touching anything without gloves on.
plus they rely on heuristics and this lack of determinism means that either there will be false positives or false negatives. both cause issues.
... but at least it looks cool. biometrics does have that going for it.
plus it costs a lot more to install, maintain and verify.
plus you can 'steal' someones biometric data without their knowledge (eg. from coffee cups, pictures etc.) without any real defense short of never opening your eyes or touching anything without gloves on.
plus they rely on heuristics and this lack of determinism means that either there will be false positives or false negatives. both cause issues.
... but at least it looks cool. biometrics does have that going for it.