"(DISCLOSURE: I work for a biometrics provider, but my views are my own.) Just about every technology is ethically neutral. Nuclear technology can run power plants or blow cities to smithereens. Anonymizers can protect citizens from repressive governments, or provide a great way to distribute porn. Similarly, biometrics can ensure identity or can be used to enslave people. The challenge with any technology is to use it wisely." - John E. Bredehoft