Linux And Biometrics (Redux)?

An Anonymous Coward asks: "Does anyone out there have current information on the use of biometrics with Linux? There was an article in the Linux Journal, but it was more of an introduction to the topic than a discussion of the state of development. Are there any biometric products that have decent Linux drivers for them? If so, is anyone currently using them to replace password authentication?" We last touched on this subject last May with little commentary on the subject. Has a year made any difference?