That is true, in a very few cases, a certain biometric authentication method may not work for a particular person. That is why there are several different methods available. There are fingerprint scanners that when a finger is placed on the sensor matrix, a very small signal is coupled from the drive ring to the subdermal layer of the skin. This signal follows the ridges and valleys of the true fingerprint. What that means is that if the surface of a fingerprint is damaged or worn, the underlying fingerprint is still accessible. As to the point of a person may lose a finger or an eye. I would suggest that they would have a much larger problem to deal with than worrying about logging on to their computer. Also, typical fingerprint authentication systems enroll more than one finger for verification. This helps to deal with issues such as cuts on a finger. As to the second point that biometric devices are expensive. A pc microphone comes with most computers these days, as well as pc net cams. There are currently 5 vendors that include fingerprint scanners in their laptops and several that include built in net cams. Steve -----Original Message----- From: KuroiNeko [mailto:evpopkovat_private] Sent: Monday, June 25, 2001 11:41 PM To: secprogat_private Subject: Re: CDSA-biometrics > I'm doing a thesis in implementing CDSA (Common Data Security > Architecture) > in a program used for secure authentication. I'm going to use biometric > devices for this purpose. Don't expect biometrics to be all-it-takes. A real-life example. A bank had a dactiloscopic scanner to authenticate users of rented private vault cells. A woman came to rent a cell, but they simply could not establish an account for her because she was a typist and her fingertips were so soft and papillar pattern was so blurry (very thin skin) that scanner simply could not identify her. Also, marketoids of biometric systems tend not to tell you one really important thing: you should not assume that a part of human body used for auth will always remain and always be the same. A person can loose a finger in a disaster, ditto an eye. Skin tends to change fast, especially fingertips, voices change, even adults' voices. Provided that biometric scanners and recognition software still cost a fortune, and they still have to be backed up by traditional auth methods, real advantage of biometrics is still questionable. -- ÌĤ¯Ç¤ÏÁͤòÊá¤é¤Ì
This archive was generated by hypermail 2b30 : Thu Jun 28 2001 - 09:06:04 PDT