Unfortunately, as late and great as the technology of biometrics is, there are a lot of ‘bugs’ that need to be worked out. One important function of biometrics in homeland security is to fight terrorism by picking terrorists out of a crowd in a busy airport. Once in a while, the system would correctly pinpoint a terrorist. But it's a system that has enormous costs: money to install, manpower to run, inconvenience to the millions of people incorrectly identified, successful lawsuits by some of those people, and many more headaches to follow. All the false alarms will eventually lead those managing the system to not trust its results, leading to sloppiness and potentially costly mistakes.
Biometrics is a security alternative that offers hope, but
the biometric system to be more forgiving, and allow for only a percentage of a match. I think this would be the only practical way for the system to be successful. Otherwise, the negative effects would outweigh the benefits.
I read that differences in somebody’s appearance over time (facial hair, scarring) may trigger an incorrect reading by scanners. Well, if something so simple could influence the results of a biometric reading, than it could also be said that it would be very easy for criminals and terrorists to fool the system into a negative reading. The only way to counteract this would be for
that could also be the source of a number of practical problems. While some of these problems are technical, others are social and cultural. Soc
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