... and fingerprint authentication has problems too

[Tom Roche]

Hans Kugler[1]
> Cop shows demonstrate all the time that fingerprints and DNA are pretty easy to come by

I hadn't thought about authentication with DNA, but ... it's definitely biometric !-)

> In both cases, rotating them on a regular basis is a dangerous and expensive process.

True that! One more factor to consider when choosing an authentication method:

* changing one's passwords: annoying but cheap (unless one's time is very expensive)
* changing one's fingerprints: probably doable, but only with the assistance of trained (expensive) professionals, and side effects could get nasty
* changing one's iris scan: not sure that's feasible, and potential side effects seem even nastier
* changing one's DNA: good luck with that :-)

FWIW, Tom Roche <Tom_Roche at pobox.com>

[1]: http://lists.phxlinux.org/lurker/message/20160802.065246.e81553e0.en.html