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Keeping Intruders At Bay With Finger Scanning TechnologyExamples of fingerprint security systems are fingerprint scanner door opener and fingerprint-scanning high-security access zones. The principle behind a fingerprint scannerEvery human has unique fingerprints and there is no way that two people, not even twins, can have identical fingerprints. Fingerprints are made up of the tiny ridges, peaks and valleys that you can see on your fingertips. These ridges and formations make it easy for you to grip stuff, but the most awesome thing about fingerprint patterns is their formation process.Three factors go into the formation of fingerprint patterns: the first factor is nature, the second factor is the genetic code, and the third is the environment. All these three factors combine to create a chaotic and ever-changing process that goes in skin formation. The effect is that all fingerprints are unique as these factors are unique for everyone. Fingerprint scanners are based on this principle. They use technology to record a fingerprint and technology to identify it. The companies making fingerprint scanners reason that if no two fingerprints are ever alike, then a fingerprint security system will be more effective rather than wearing badges or identity cards, which can be easily faked. Types and technology of fingerprint scannersThe basic function of a fingerprint scanner is recording the ridges and valleys on your fingertips and then figuring out at a later stage, when you present you finger for scanning, whether these ridges and valleys you just impressed on the scanning machine match with the ones you have recorded earlier.There are two kinds of fingerprint scanners in the market: optical scanners and capacitance scanners. Both do the same thing, but differ on the technology employed. An optical scanner creates a digital impression of your fingerprint using light sensors, while a capacitance scanner grabs your fingerprints using electrical sensors. A capacitance scanner is considered better than an optical scanner because it gives sharper fingerprint patterns. An optical scanner, on the other hand, may show slightly smudged patterns. Also, a capacitive scanner is more compact than an optical scanner. Advantages of fingerprint scannersFingerprint scanners are more advantageous and superior to other security systems such as identity cards with magnetic strips, or a password-based security systems. Moreover, they are not very expensive, which is why their usage is growing in small businesses. Here are a few of their advantages:
Disadvantages of fingerprint scannersIt is not as if fingerprint scanners are the ultimate thing in security systems. Just like other gadgets, they too have their disadvantages and vulnerabilities. Here are some of the disadvantages:
Tricking a fingerprint scanner
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