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Common Questions and Answers for Fingerprint Access Control Machines

November 11 , 2022

What is Fingerprint  Access Control?

With fingerprint access control, you use a fingerprint scanner to create a template for each person you want to authorize for access. Then when they present their finger at a fingerprint reader, for example by a door, it's compared with the stored template in your database. If it's a match, they're given access.


But in daily use, many customers will also have a series of problems, I will answer the common problems.


Question 1: Some users' fingerprint access control often fails to pass verification. How to solve this problem?

The following situations may make it difficult or impossible for some employees to use fingerprints for access control management:
a. The fingerprints on some fingers are smoothed;
b. The folds on the fingers are too many and often change;
c. The skin on the fingers is severe; the fingerprints cannot be recognized If you are a user, you can delete the fingerprint and re-enroll it, or enroll another finger.
When registering fingerprints, such users need to choose fingerprints with better quality (fewer wrinkles, no peeling, and clear fingerprints), try to make the area of the fingers contact the fingerprint collection head as large as possible, and do a comparison test after the registration is completed; and it is recommended that Register several more backup fingers. 


Question 2: When the access control mechanism cannot communicate, what are the reasons?

The possible reasons are: 

a. The communication port setting is incorrect, and the selected communication port is not the actual COM port used. 

b. The baud rate of the communication port of the computer is different from the baud rate of the attendance machine. 

c. The access control mechanism is not connected to the power supply or is not connected to the computer; 

d. The access control mechanism is connected but not turned on. 

e. The connected terminal number is incorrect. 

f. The data line or the converter cannot communicate. 

g. The COM port of the computer is broken.


Question 3: After the access control machine is connected to the power supply and turned on, the LCD display is incomplete, sometimes only half of it is displayed, and sometimes the screen is blurred. What is the problem and how to solve it?

The possible reasons are: 

a. the motherboard is broken; 

b. the internal characteristics of the liquid crystal. At this time, it is necessary to contact the supplier and return for repair.


Question 4: How to clear the administrator of the access control machine?

You can use the access control machine to communicate with the computer. After the communication is successful, enter the access control machine management tab page, click the clear administrator button, and you can clear the access control machine administrator, after disconnecting, you can enter the access control machine menu mode.


Question 5: What is the reason for the beeping sound of "flute" when the access control machine is connected?

The possible reasons are: 

a. If the above phenomenon occurs when using RS-232 communication, the baud rate of the computer is inconsistent with the baud rate setting of the attendance machine. 

b. If RS-485 communication is used, the two lines of the converter communication line may be reversed, or the two lines may be stuck together.


Question 6: After the access control machine is turned on, it keeps showing "please press (leave) your finger again" repeatedly, what is the problem? How should it be resolved?

The reason for this problem may be: 

a. After using it for a long time, the surface of the collection head becomes unclean or scratched, which will make the collection head mistakenly believe that there are fingers on the surface and cannot pass, so this problem occurs. In this case, you can use self-adhesive tape to stick the dirt on the surface of the collecting head. 

b. The connection of the fingerprint collection head is loose or has been loose. 

c. The motherboard chip is broken. If there are two reasons for items c and d, you need to contact the supplier to apply for a warranty.


Question 7: There is no problem in downloading the fingerprint and password data during the operation in the access control machine management, but when reading the access control record, it prompts failure or an error in the middle. How to solve it?

This situation may be related to the data cable, the converter, or the COM port of the computer. At this time, you can reduce the communication baud rate between the access control machine and the computer, such as 19200 or 9600, and then read it.

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Whether you have any questions about purchasing or using it, you can call or email us at any time.  Email: sales@s4a-access.com


Author: Written by Ms.Anna Zhang from S4A INDUSTRIAL CO., LIMITED

Contact Us
  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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