In especially large applications, biometric security can save much time. For example, in an airport…imagine not neededing to talk to a laundry list of people to get to just the security checkpoint or gate because you have a biometric scan of your hand confirming your identity.
The implications of biometric security is far beyond what most people imagine it. The technology has the ability to replace or single-handedly unify many actions that require security.
Hope this helps!