Fingerprint scanner is secure

Fingerprint scanner is used many places that need high security for many years.Now, we can buy personal fingerprint scanner cheaply.If we use this, our computer is protected more secure. But we have to do one more step to use computer at the same time. It’s fingerprint scan.

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What is fingerprint?

Fingerprint is one of twist on all finger.We have only own fingerprint. There is no same fingerprint in the world.Same fingerprint doesn’t exit even if twins.We don’t understand difference in many people’s fingerprints. But special persons or high performance software can understand difference.So, fingerprint scanner can understand particular person.

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Mechanism of fingerprint scanner

At first, fingerprint scanner gets our fingerprint data and makes picture. And it has to know our fingerprint’s ridges and valleys.From next time, fingerprint scanner check printed fingerprint’s pattern and compare with data which is scanned at first time.There are many methods to get fingerprint’s information. It’s very complex.

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About capacitive fingerprint scanner

Capacitive fingerprint scanner makes picture of our fingerprint’s ridges and valleys, too.Standard fingerprint scanner uses fingerprint’s shape. So, bad person can lie fingerprint and do some bad thing.But capacitive fingerprint scanner needs light and dark patterns which constitute fingerprint’s impressive when we look this.Bad person can’t lie fingerprint easily in this way.

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About fingerprint analysis

Fingerprint analyzer pile up two fingerprints automatically and do pattern match on the movie and TV.But this way needs many processing ability.Actually, almost fingerprint scanner compare fingerprint’s particular characteristics that is called minutiae.This way is similar to constellation. We think overall by only some points.

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Good points and bad points

Biometrics certification like fingerprint has good points and bad points.One of good points is that there is no person who can guess fingerprint pattern. If we use password, it’s guessed.Another good point is that we can’t leave own fingerprint. If we use card, we may leave it.On the other hands, scanners make mistake sometimes. It’s bad point.

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