Which is better, optical or capacitive fingerprint lock

There are pros and cons.

Capacitive, scratch and other fingerprints are collectively referred to as semiconductor fingerprint heads, which have the advantage of anti-counterfeiting fingerprint function and fast recognition speed. But the wear resistance is not good, because the hard objects on the body will scratch it, generally speaking, the life is only comparable to the mobile phone, so it is suitable for mobile phones.

Optical fingerprint head, divided into domestic and imported, the domestic optical fingerprint head has a longer life than ordinary optical fingerprint head, better wear resistance, but the disadvantage is that it does not have anti-counterfeiting function, such as the fake fingerprint head made of silicone can also be entered into the system, in other words, others can copy your fingerprint to open the door of your home. But in fact, it is very difficult for others to record one of your fingerprints, so it is better to smash the door of the house directly. The other is the imported fingerprint head, which is currently used in China on the gold finger code, which has anti-counterfeit fingerprint patents in South Korea and the United States, and there is a layer of sapphire crystal similar to the hardness of a Rolex watch on the surface, which is very scratch-resistant.

Of course, it will be more than 1,000 yuan more expensive than an ordinary fingerprint head.

Therefore, in terms of durability, the fingerprint head is better with optics, because of good stability and long service life.

Optical fingerprint lock, that is, fingerprint lock lock recognition system is an optical identification system, and the optical fingerprint head collection window generally uses tempered glass, which has good environmental adaptability, is not affected by static electricity, and is stable. Fingerprint recognition collects fingerprint information through the principle of total reflection of light, and the anti-counterfeiting is low.

Capacitive fingerprint lock, that is, the fingerprint lock adopts a semiconductor fingerprint head, which forms fingerprint information by collecting the distance from the fingerprint ridge and valley to the touch plate, which can identify real and false fingerprints and has high security.

Comparison of advantages and disadvantages).

Advantages and disadvantages of semiconductor fingerprint recognition.

With the decline of costs, more and more fingerprint lock companies choose semiconductor fingerprint identification modules. So what are the advantages of the fingerprint recognition module? What are its shortcomings?

1. Advantages of semiconductor fingerprint recognition.

1 The semiconductor fingerprint recognition module only recognizes living fingerprints, with high security. That is to say, the semiconductor fingerprint head can penetrate the ** surface hair layer, so the silicone simulated fingerprint that is prevalent on the Internet basically does not play any role here, and the advantage of identifying living fingerprints is that fingerprints basically cannot be copied or imitated.

2 The semiconductor fingerprint recognition module has very high sensitivity and recognition accuracy. Semiconductor fingerprint recognition is a capacitive array composed of tens of thousands of capacitors, which collects fingerprint ridges and valleys to form fingerprint data at the distance from the touch plate, which is more accurate than optical scanning, can collect finer fingerprint details, and has a faster collection speed.

3.The semiconductor fingerprint recognition module has a high recognition rate. In normal use, the optical fingerprint head will be affected by the dryness, wetness, and depth of the fingerprint, resulting in identification errors and the phenomenon of unable to recognize the fingerprint, and semiconductors can eliminate these problems to the greatest extent.

In addition, semiconductors also have the advantages of low power consumption and small size, which is of great help to reduce the power consumption of smart locks and reduce the size of locks.

Second, the insufficiency of semiconductor fingerprint recognition.

1 The cost of the semiconductor fingerprint recognition module is slightly higher. The capacitive version of the semiconductor fingerprint recognition module is obviously more expensive than the tempered glass of the optical fingerprint module, of course, the cost of other components is also relatively higher than the optical fingerprint module, so the cost is higher, but with the development of the industry, the difference between the two is gradually getting smaller.

2.The semiconductor fingerprint recognition module is not easy to maintain. The collection window of the semiconductor fingerprint head will be affected by stains, sweat stains and static electricity, and it is easy to be scratched, so it is necessary to pay attention to protection and maintenance when using it, otherwise the service life is difficult to guarantee.

Advantages and disadvantages of optical fingerprinting.

At present, due to the low cost and strong adaptability of optical fingerprint recognition modules, they are widely used in major fields, and many low-end fingerprint locks are also used in optical fingerprint recognition modules.

Big brother, you are much more professional than me! Pass by!!

The Buyang one I use at home is very easy to use, and I have used it for several years.

Is semiconductor fingerprint recognition a liveness recognition.

Semiconductor fingerprint sensors have the advantages of small size and high recognition rate, and these unique advantages have attracted well-known companies such as Sony and Infineon, and developed their own unique products. Of course, as a fingerprint sensor with great potential and representing the future development direction, it also has certain limitations, which is that it is susceptible to static electricity, and in severe cases, the sensor may not be able to collect images, and even itself will be damaged; Finger sweat salt or other dirt, as well as finger wear, etc., will cause image acquisition difficulties, the surface scratch resistance is poor, and its abrasion resistance is not as good as glass; The manufacturing cost of large area is high, so the image area is small; The stability of the sensor, especially the sub-optimal performance, needs to be further verified. However, the semiconductor fingerprint sensor is better than the optical one to identify dry fingers in winter, and with the improvement of technology and the cooperation of auxiliary functions, the author believes that the semiconductor fingerprint sensor will be more widely used in the future.

Fingerprint locks usually use optical fingerprint heads, mainly because the optical fingerprint head has been used in the market for a longer time and has a longer stability. The semiconductor fingerprint head is usually used in some places where the temperature difference between day and night is relatively large, and it is possible that the user's fingerprint is not obvious and will be used more. In general, optics and semiconductors feel similar to each other.

The principle of fingerprint recognition technology is basically the same, so you don't have to worry too much about theft resistance. The stainless steel fingerprint lock can also be used, there is no problem with the use, the lock cylinder above the C level, the use is assured.

1.Security: The person who bought it may have originally thought of anti-theft, and now thieves are rampant in this society, and no one is in sight, but with a fingerprint lock with a unique and non-replicable advanced identification system, say goodbye to thieves!

We bought not only a mechanical lock, but also an insurance policy for our property.

2.Convenient: It is true that life is much more convenient after having it, before you often forget to bring the key when you go out, or the key is lost, or you go out to throw garbage and accidentally bring the door up; If you have a large number of keys at home all day long, it is bulky and unsightly, and you don't have to worry about it with a fingerprint lock.

3.Fashion: Although the market space for fingerprint locks is large, they are still completely popularized in ordinary families.

If you have a fingerprint lock at home, you are the fashionistas around your home, and they will envy you for having such a good lock and such a high-end atmosphere. Just because you bought a fingerprint lock, improving your face, your identity, your entire standard of life and quality!

Disadvantages of fingerprint locks:

1.In the event of a power outage, a No. 9 backup battery is required, which is difficult to obtain in some secondary cities.

2.Although fingerprints are used, in case of an emergency, the key must be carried with you, which is easy to lose and be stolen, and there is still a problem of changing the lock.

3.When fingerprints are collected, they cannot be identified once they encounter scratches, stains, peeling, etc.

4.The scanning surface area is large, which is easy to be malignantly damaged, resulting in improper unlocking.

The optical fingerprint sensor is reliable, cheap, wear-resistant, has a high recognition rate, can automatically end the image acquisition, and the image quality is getting better and better, strong anti-counterfeiting fingerprint ability, strong antistatic ability, ultra-thin volume: can be embedded in various terminal products.

The semiconductor fingerprint recognition module only recognizes living fingerprints, with high security. The recognition module has very high sensitivity and recognition accuracy.

Optical Fingerprint Door Lock:

The recognition rate of fingerprint images with covers on the surface of dirty and dry fingers is very low, and the adaptability to environmental factors such as temperature is poor. However, due to the limitation of the optical path, the distortion-free collector is larger. There is usually a more severe optical distortion; There are often traces left on the surface of the collection window.

CCD devices may have degraded image quality and false fingerprints due to aging of their lifespan.

Semiconductor fingerprint door lock:

It is susceptible to static electricity, so that the sensor sometimes cannot read the image, and even destroys the image, and the wear resistance is not enough, which affects its lifespan, which is more expensive than the optical fingerprint sensor.