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Show you the secret of fingerprint lock

June 08 , 2021

The technology of fingerprint recognition is actually not unfamiliar, and it has already been used a lot in life. As the core of the fingerprint lock, the fingerprint identification system is closely related to the security and ease of use of the product, and the mystery of it will be revealed to you by Bida.


Fingerprints, due to their lifetime invariance, uniqueness, and convenience, have almost become synonymous with biometric identification. Fingerprints refer to the lines produced by the unevenness of the skin on the front of the end of the finger. The mainstream fingerprint collection and recognition technology have the following categories:

Fingerprint Door Lock


  Optical fingerprint collection technology Currently the most widely used fingerprint collection technology, the light shines on the glass surface with fingerprints, the reflected light is obtained by CCD, and a clear fingerprint image is formed on the delicate CCD. After years of development, optical capture equipment has many advantages: it has good environmental adaptability and can withstand a certain degree of temperature changes; it can provide images with a resolution of more than 500dpi, which is a guarantee of recognition accuracy; at the same time, the sensitivity of fingerprint recognition is very high. , Less than 1 second, the experience is more smooth in actual use. Because of these characteristics, optical fingerprint collection technology has gradually become the mainstream fingerprint collection technology in the market.


The semiconductor fingerprint acquisition technology is on a "flat plate" integrated with thousands of semiconductor devices, and the finger is attached to it to form the other side of the capacitor (inductance). Because the surface of the finger is uneven, bumps and pits The actual distance of touching the tablet is different, and the formed capacitance/inductance value is also different. According to this principle, the device summarizes the different values collected to complete the fingerprint collection.


Radiofrequency fingerprint identification technology has developed today, and the third generation of bio-radio frequency fingerprint identification technology has appeared. The radiofrequency sensor technology emits a small amount of radiofrequency signal through the sensor itself, which penetrates the epidermis of the finger to control and measure the lines of the inner layer to obtain the best Fingerprint image. Therefore, it can pass up to 99% of difficult fingers such as dry fingers, sweaty fingers, and dirty fingers. The fingerprint sensor has a strong anti-counterfeiting ability. The identification principle of the fingerprint sensor only responds to human dermal skin, which fundamentally eliminates the problem of artificial fingerprints. Temperature zone: suitable for particularly cold or extremely hot areas.


Of course, the application of each technology also has certain advantages, disadvantages, and limitations. Semiconductor fingerprint technology is susceptible to static electricity. In severe cases, the sensor may not collect images, or even itself will be damaged; the disadvantage of optical fingerprint recognition is that the volume is relative to The size of semiconductors is large, and the recognition of dry fingers decreases in winter. However, in view of the many advantages above, optical fingerprint collection is now widely used in fingerprint door locks, fingerprint access control, fingerprint clocking machines, guns and ammunition, car fingerprint anti-theft management, etc. Bida fingerprint locks and well-known manufacturers in the industry also use this Technology; the third-generation bio-radio frequency fingerprint identification technology is far away from mass consumers in terms of manufacturing costs and is currently only used in some military scientific research fields. At present, these three fingerprint recognition technologies have their own advantages, but it is also necessary for the designer to master the core technology of this component. The key is to make good use of the advantages and control the disadvantages. Of course, consumers also need to make a suitable one according to their own conditions of use. Choice and judgment.


Author: Written by Mr.Juan from S4A INDUSTRIAL CO.,LIMITED

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  S4A-Security For All.S4A Industrial Co., Limited, Founded in 2010, We have been dedicating in access control production R&D and sales for 10year till now. With the belief that we do one thing well in a lifetime, our CEO has been in this industry for 15 years. During the past 10 years, our products have been exported to various countries and regions. And 90% of customers come from the recommendations of cooperative customers, and 80% of the turnover comes from cooperative customers in the past 10years.Your business is a plant, we are the gardener, our mission is to water and fertilize the plant, and make it become the towering tree. We attach great importance to the partner's appeal, customer's suggestions, and feedbacks. To strengthen Product quality awareness, client's service awareness. Our clients and S4A are on the same path walking for many years.       S4A's future would be even more brilliant, this is related to all of our staff's working sweat. When you join this team, you will feel an invisible power to drive walk forward. S4A mainly produces a series of security Door Access Control such as:Network Access Controller, Locker board, Electromagnetic lock, Standalone door Controller, Automatic door opener, etcOur team can manufacture products, sell products, and do after-sales.In the realm of access control, one company stands out for its unwavering commitment to providing security services for everyone. S4A, which stands for "Security for All," has been at the forefront of access control technology for the past 13 years. With its own state-of-the-art factory and a strong focus on research and development, S4A has continuously delivered cutting-edge access control machines with the latest functions. Their dedication to product quality, customer feedback, practicability, and cost performance sets them apart as a leader in the industry.Factory and R&D Expertise:S4A takes pride in its fully-equipped factory, where skilled engineers and technicians work tirelessly to develop and manufacture access control solutions that meet the highest standards. The company's investment in research and development has resulted in a steady stream of innovative products that cater to evolving security needs.By staying ahead of the curve, S4A ensures that their customers have access to the latest advancements in access control technology.Quality Assurance and Customer Feedback:At S4A, product quality is of paramount importance. The company adheres to rigorous quality control procedures throughout the manufacturing process to guarantee the reliability and durability of their access control machines. Each product undergoes comprehensive testing to ensure it meets industry standards and exceeds customer expectations. S4A also places great value on customer feedback, actively seeking input to continuously improve their products and services. By listening to their customers, S4A maintains a customer-centric approach and delivers solutions that address real-world security challenges.Practicability and Cost Performance:S4A understands that access control solutions must not only be technologically advanced but also practical and cost-effective. The company's emphasis on practicability means that their products are designed to be user-friendly, easily integrated into existing systems, and adaptable to various environments. S4A's access control machines are known for their intuitive interfaces, simple installation processes, and seamless compatibility with other security systems. Additionally, S4A strives to provide cost-effective solutions without compromising on quality. Their competitive pricing ensures that security is accessible to businesses and individuals of all sizes.With 13 years of industry experience, S4A has cemented its position as a leading provider of access control solutions. Through their dedication to "Security for All," the company has set a benchmark for excellence in product quality, customer satisfaction,practicability, and cost performance. S4A's in-house factory and research and development capabilities enable them to stay at the forefront of technological advancements in the field of access control. As the company continues to evolve and innovate, S4A remains committed to empowering individuals and organizations with the highest level of security, ensuring that everyone can enjoy the peace of mind that comes with a reliable and efficient access control system.We can create value for you!Quality takes great importance for a company's credibility, and buyer's every penny spend must worth it. That is our most basic principle. Our business mainly for wholesale, so we could offer large quantities at competitive prices. During the past 10 years, We work hard to create value for our customers, and with our help, customers have an increasing market share. 99% of the customer...<
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    Factory Address:Building S4A, South Third Lane, Qiuyuling Street, Zhangkeng Village, Hengli Town, Dongguan City, Guangdong Province Office Address:#601,floor 6 ,building 1,JINFANGHUA industrial zone, Bantian St. Longgang Dist. Shenzhen, PRC.

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