Android's first front-pressed fingerprint recognition mobile phone is a Meizu MX4 Pro, which is launched in 2014. It has to be said that Meizu has always been a small contribution in mobile innovation. The Meizu used the fingerprint module of the ontum, and the apple broke the monopoly of the front-pressed fingerprint recognition.
Principle of fingerprint technology
After talking about the history of mobile app fingerprint recognition, let's take a look at what fingerprint recognition technology is going on. The fingerprint identification technology used on the phone mainly has two types of scratches and pressing, and the iPhone 5S has been used in nearly two years. It is a press-based fingerprint identification. The Samsung S5 uses or scratched fingerprint identification, Scratching is inconvenient, and the recognition rate is not as follows, gradually eliminated.
At the beginning, Anthentec launched a press-based fingerprint recognition. Apple saw that the business machine used this technology not only on the iPhone 5S, but also acquired this company, so the company can only use the company before the Meizu MX4 PRO. Fingerprint recognition. Then the domestic bush (here you want to be a domestic business point!) Overcome the pressing fingerprint technology, and the fingerprint has also launched a similar technology, and the Android mobile phone began to spread.
According to the technology, it is divided into capacitive and radio frequency. The iPhone is currently using capacitive fingerprint identification technology, and the sensor is formed in an electric field with a finger, and then the sensor will form an image of the finger ripple, a contrast of this image and entry. This type of program is low, but if there is water or dirty in the hand, the recognition rate is very low.
The fingerprint identification is mainly composed of a sensor, a protective layer, and a metal ring. The protective layer generally uses sapphire glass to prevent the sensor from being scratched; the metal ring is used to detect finger and decreasing noise; the sensor is of course used to record fingerprint information.
The other is the radio frequency fingerprint recognition, using radio waves or ultrasonic waves to identify collecting fingerprints through echo, and the identification rate in the wet hand is much higher. At present, the radio frequency is the mainstream, the millet 5S is ultrasonic fingerprint identification technology, and hidden fingerprints are used, and the groove is dug in the HOME key position, and the entire panel is integrated.
Fingerprint recognition
Current fingerprint recognition technology can be applied to many aspects of unlocking, payment. A full screen has become the direction of this year's mobile phone development, then the fingerprint recognition technology under the screen is one of the difficulties that manufacturers want to overcome. At present, Qualcomm already has the results of fingerprint recognition under the screen, and relying on Vivo on the MWC Shanghai Exhibition.
Fingerprint recognition technology makes our mobile phone more secure, and let us use more convenient, technology is originally more and more convenient for our lives! Today, the development of fingerprint recognition technology has been roughly combed, I hope everyone can understand what we can use every day.
Original link: https://www.eeboard.com/news/zhiwenshibie-4/
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