What Are the Main Biometric Technologies?




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With the development of artificial intelligence technology, various biometric technologies are slowly showing up in our lives. From mobile phone unlocking, online payment to online banking fingerprint recognition or swiping face login. What are the main biometric technologies? What are the characteristics?

 

When you go to the bank for business, in the final confirmation, the teller will ask you to sign on the tablet for confirmation. Signature recognition is based on the signature font for identity authentication. This is a traditional verification method, which was not a biometric technology at the time.

 

Signature recognition

 

Everyone has their own unique writing specifications, so signature recognition can be used as a kind of biometric identification and belongs to behavior measurement. Digital signature is a process of measuring the image itself and the entire signature action, including the speed, order and pressure of each letter and letter.

 

Signature recognition includes offline signature recognition and online signature recognition. Online recognition is to collect the author's signature sample through Word Pad. Some systems can also collect data such as pressure and pen holding angle. However, since the dynamic setting of human writing is not fixed and has a certain range of changes, it may not be possible to distinguish real signatures from forged signatures only from glyphs.

 

Voiceprint recognition

 

Voice recognition is also a behavior recognition technology, but sometimes voice recognition is not as safe as signature recognition. Voice recognition is based on the exact match between the voice collected on site and the registered voice template. It relies on voiceprint recognition equipment to continuously measure and record the waveform and changes of the voice to confirm the identity of the other party.

 

The advantage of voiceprint recognition is that voice recognition is a non-contact recognition technology that users can actively accept. But there are also many shortcomings, for example, the range of sound changes is too large to match accurately. For example, when the user catches a cold and the vocal cords are damaged, it is difficult for the identification system to identify the user.

 

Iris recognition

 

We often see the protagonists in some technology movies use iris recognition to verify their identity. Iris recognition technology is a recognition technology based on biometrics. It scans through the iris of the human eye through infrared scanning and extracts features for sample comparison to confirm the identity of the other party.

 

Before iris recognition, it is necessary to locate parameter features. These features and unique shapes are used to image, separate and lift the iris. High precision and no physical contact are its advantages. This is why banks and other financial institutions use iris recognition to verify user ID.

 

Face recognition

 

As one of the mainstream biometric methods, the biggest advantage of face recognition is that there is almost no emphasis on hardware, even a few hundred yuan mobile phone camera can be satisfied, and the rest is only a software problem. When you check out, take a look at the face-swiping device and the payment is complete. This authentication method has high convenience in the future mobile payment era, and the hardware requirements are also very low.

 

Fingerprint recognition

 

Fingerprint recognition is currently the most widely used biometric technology and has a solid market foundation. Fingerprint recognition technology can effectively confirm a fingerprint by analyzing the global and local characteristics of fingerprints, such as ridges, valleys, endpoints, and bifurcation Human identity. The feature value extracted from the fingerprint can be very detailed.

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