Fingerprint unlocking front or rear is good _ fingerprint unlocking front and rear comparison analysis

As one of the biological characteristics of human body, fingerprint is not only unique, but also genetic and immutable. Therefore, this technology was first used in criminal investigation. With the passage of time, fingerprint recognition technology has entered the stage of commercialization, and gradually penetrated into the fields of access control, attendance and so on. Of course, today's mobile phone industry has also popularized this biotechnology, widely used in unlocking, encryption and other places, bringing us a fast and safe experience.

Adding fingerprint recognition to mobile phones, in my impression, Apple first proposed and applied, Apple has been installed in front of the first generation of fingerprint recognition, it seems to become a standard, as if it is not predecessor is a violation of the law, Or it seems to be low.

Here are a few of the more common fingerprint phones on the market for comparison, and for the difference between the front and back of the fingerprint identification module, there are disadvantages analysis!

Apple released iphone 5s to make the push-type fingerprint recognition solution for the first time in mobile phones, but after Mate7 went on the market, it set off a wave of Android-based push-type fingerprint recognition solutions. Now more and more machines follow the post-design of Mate7. Fingerprint recognition has gradually become the standard design of Android phones.

At present, iPhone and Samsung adopt the pre-fingerprint identification scheme, but most domestic manufacturers draw on the design of Huawei Mate7, adopting the rear fingerprint identification scheme, front and rear schemes, each with advantages and disadvantages. The following general specifications of the pre-fingerprint And the general outline of the post is listed, and a comparative description is made:

iPhone 6S, front circular fingerprint recognition: module shape diameter 10.4mm, recognition area 4.8*5.9mm, pixel array 96*118pixels, 500dpi, recognition rate FRR@FAR=1%@1/50k, number of entries 15~20 Times

Samsung S7, front long strip fingerprint recognition: module dimensions 5*14mm, recognition area 4*10mm, pixel array 57*142pixels, 363dpi, recognition rate FRR@FAR<1.6%@1/50k, number of entries 15~ 20 times;

The above two front schemes all add Dome buttons;

The commercialization of Samsung/Apple Pay not only allows us to see the second spring of NFC coming, but also sees the scene of large-scale popularization of front-mounted fingerprint modules in the future (NFC modules are generally located above the back of the machine head), of course, the premise is Samsung / Apple Pay can be popularized. In terms of operation, if the mobile phone is placed on the desktop, if there is news and it is not convenient to pick up, just use the recorded finger to click and view it, so the front fingerprint module is more convenient than the rear.

However, aside from the above scenario, the large screen machine with the front fingerprint module is extremely inconvenient when unlocking with one hand, and there is a risk of falling. In terms of fingerprints, because the large screen machine of the front fingerprint module generally does not consider one-handed operation, ten fingers are randomly recorded. If different fingerprint functions are combined with different fingerprints, there will be a better experience.

Advantage:

1. When fingerprinting is performed, the operation is visible, and the learning cost is lower than the post-setting;

2. When the mobile phone is placed on the table and needs to be unlocked, the front fingerprint will be more convenient, without picking up the mobile phone;

3. Fingerprint and Home key are combined into one, convenient UI operation;

Disadvantages:

1. The recognition rate is lower than the post-position, and the number of entries is more;

2. For large-screen mobile phones, one-handed support cannot afford the entire mobile phone, which is relatively weak to use;

3. The waterproof problem of the module area is difficult to solve;

4. The proportion of the mobile phone screen cannot be made larger, and the chin is longer, which affects the coordination of the positive proportion of the whole machine;

5. The front-end cost is high, and the antenna interference problem is more difficult to solve;

Mate7, rear square fingerprint recognition: fingerprint area appearance 11.5*11.5mm, recognition area 9.6*9.6mm, pixel array 192*192pixels, 508dpi, recognition rate FRR@FAR<2%@1/50k, number of entries 6 times;

Mate8, rear circular fingerprint recognition: fingerprint area appearance 11mm diameter, recognition area 8*8mm, pixel array 160*160pixels, 508dpi, recognition rate FRR@FAR<1%@1/50k, number of entries 6 times;

Eva, rear square fingerprint recognition: fingerprint area appearance 9.8*9.8mm (in order to adapt to Eva's small size screen fingerprint identification optimization opening design), recognition area 8*8mm, pixel array 160*160pixels, 508dpi, recognition rate FRR@ FAR=0.6%@1/50k, the number of entries is 6 times;

In the era of rapid update of the mobile Internet and hardware, smart phones are not only a communication tool for making calls, but they are comparable to the performance of PCs, which can meet the demand for audio and video entertainment, because the bigger the screen, the more substituting it is. However, if the fingerprint module is placed on the front of the large screen, one-handed operation is particularly inconvenient, so in most cases, the fingerprint module of the large-screen mobile phone is rear-mounted, which is very convenient when unlocking and receiving the call in one hand.

In terms of taking pictures, when the large screen machine of the front fingerprint module is in use, the mobile phone is not easy to control, and one-hand operation may cause jitter, and the large screen machine of the rear fingerprint module can easily complete one-handed operation with the touch of the index finger. Selfie. However, the rear-mounted type also has certain limitations. If you want to use it with one hand, the finger that is often used is the index finger of the left/right hand. The middle finger is barely usable. The ring finger and the little finger do not want to operate with one hand unless your hand big enough.

Advantage:

1. The recognition rate is higher than the front: the collection area is larger than the front, the recognition rate is higher, and the number of entries is less;

2. Conducive to the waterproof design of the whole machine: a completely waterproof design is achieved by sealing the glue;

3. Conducive to the large screen ratio design: the rear fingerprint mobile phone maintains the design characteristics of the large screen;

4. Ergonomics: When a person operates the mobile phone with one hand, the position of the index finger touch is also at the fingerprint of the back, and the unlocking is convenient;

5. One-hand self-timer is more convenient through the rear fingerprint;

Disadvantages:

1. When the mobile phone needs to see information on the desk, it must be picked up to unlock it.

2. It is not easy to unlock when the leather case is folded back;

At present, there are four mainstream mobile phone fingerprint identification solution providers, namely AuthenTec, SynapTIcs Validity, Fingerprint Cards AB (FPC), and Goodix. On July 27, 2012, Apple acquired AuthenTec for $356 million, so the company is affiliated with Apple; on October 17, 2013, SynapTIcs acquired the bio ID company Validity for $255 million; FPC launched the world's first use. Capacitive touch fingerprint sensor for Android smartphone and tablet—FPC1020; Huiding Technology was established in 2002 and began to enter the touch industry in 2006. As the only strategic partner of MTK, it has more than 30 patents on capacitive touch technology.

It is the efforts of these companies that have enabled the rapid adoption of fingerprint recognition technology. In fact, the front is also good, the rear is worth mentioning, as long as the use of comfort on the line, after all, these two options have their own advantages and disadvantages. It is reported that at this year's MWC conference, SynapTIcs and Qualcomm unveiled a new type of fingerprint recognition technology, which can directly perform fingerprint verification on the screen, and will not be restricted by specific regions when unlocking. It is a pretty good fingerprint unlocking solution. In addition, from the perspective of current development, fingerprint recognition technology will penetrate into our lives in different forms in the future. At that time, there may be no problem of whether it is a good front or a good post.

In short, the front and rear have their own advantages and disadvantages, if you are used to unlocking the index finger, the rear will be relatively good operation, if you are used to unlocking the thumb, the front will be relatively good operation, the ability of the mobile phone manufacturer, for the front and rear You can choose, according to your own understanding, overcome the design difficulties of the front and rear, and form your own design style.

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