Huawei Pura70 still uses short-focus fingerprint recognition？ The reason may be here.
   [Tianji. com Mobile Channel]As Huawei Pura70 series started the pioneer program yesterday, many people experienced this product at the first time. Xiaobian was satisfied with this one as a whole after the experience, except for the unlocking experience.  
    Huawei was one of the earliest manufacturers to adopt screen and 3D structured light face recognition, even in the past Huawei Mate20  Pro  UD、Mate30  Pro、Mate40  Pro is equipped with two payment-grade biological unlocking schemes, namely, screen fingerprint recognition and 3D structured light recognition, and the screen fingerprints of the above-mentioned models are still ultra-thin recognition modules, and the recognition position is very reasonable. At that time, the unlocking experience of Huawei’s flagship mobile phone can be said to be the most perfect in the whole machine circle.  
    However, from the beginning of Huawei’s flagship mobile phone, the short-focus screen fingerprint recognition module has become standard, which has little impact on Mate series supporting 3D structured light face recognition. However, for P series, short-focus fingerprint identification, which is extremely low, has become the only payment-level biometric identification scheme, and it is not comfortable to use. In the latest Pura70 series, all models from 5000 to 10000 are using short-focus fingerprint recognition. Xiao Bian thinks this shortcoming is the biggest regret of Huawei Pura70.  
   The good news is.This situation should be improved in the near future. At present, there are two kinds of fingerprint identification technologies under the screen: optical fingerprint identification and ultrasonic fingerprint identification. The unlocking principle of optical fingerprint recognition is to use the refraction and reflection of light. When a finger is placed in the unlocking area, high light will appear in the area to illuminate the fingerprint area, and the reflected light will return to the sensor under the optical fingerprint module through the gap of the screen.
    The principle of ultrasonic fingerprint identification technology is that the finger presses the screen, and the sensor under the screen emits ultrasonic waves to the finger pressing area. When the ultrasonic wave touches the "gully" of the fingerprint, the degree of absorption, penetration and reflection is different, and echoes with different energies will be generated and received by the sensor, so as to construct a 3D fingerprint image, and then achieve the purpose of identification and unlocking.  
    Compared with the two technologies, ultrasonic fingerprint identification technology has the characteristics of fast identification speed, high identification rate, strong penetration, no fear of water stains and stains, strong interference ability, support for in-vivo detection, high security and so on, and it is the main identification scheme used by many flagship models at present.
    However, the existing ultrasonic fingerprint identification scheme is mainly provided by Qualcomm, and Huawei’s Kirin platform does not have relevant patents, so we can’t use more advanced fingerprint identification scheme on the latest Mate and Pura models.  
    Recently, the network exposed a new patent of Huawei called "an ultrasonic fingerprint identification module, system and electronic equipment". As the name implies, this is Huawei’s self-developed ultrasonic fingerprint identification scheme. In addition, according to well-known digital bloggers, there is a Mate  70 is testing the ultrasonic fingerprint sensor, and it seems that it will not be particularly far away from the practical application. There is great hope for P80 and Mate80 next year.  
    This style of acting is very "Huawei", including the previous screen. Before, Huawei flagship machine’s screen had a big gap in quality and perception compared with competing products. The reason was that Huawei insisted on using and supporting domestic screens. Although it was controversial, after years of efforts, domestic screens finally made great progress. Now many mobile phones will be proud of being equipped with domestic screens, and the overall price of OLED screens for mobile phones has also become lower. Many domestic enterprises related to display have also gained sufficient technical accumulation.  
    In the research and development of fingerprint identification scheme, Huawei still follows its own rhythm. When it is in trouble, it does not choose to compromise, concentrates on research and development, and then makes a blockbuster. I believe that in the future, we can use the self-developed ultrasonic fingerprint identification technology.