ZKTeco SLK21M Fingerprint Module User Manual

User Manual
SLK21M
Date: July 2022
Doc Version: 1.0 

Thank you for choosing our product. Please read the instructions carefully before the operation. Follow these instructions to ensure that the product is functioning properly. The images shown in this manual are for illustrative purposes only.
For further details, please visit our Company’s website www.zkteco.com.

Preface
Thank you for choosing our product SLK21M Embedded Optical Fingerprint Module. Please read this User Manual carefully before use.
We strongly believe that Embedded Optical Fingerprint Module brings you and your customers an excellent user experience and will uplift your Brand Image and Management to a higher level. However, consider the stability of the product quality or modify the system settings without professional instructions. For further queries, don’t hesitate to get in touch with the local dealers.

Overview

SLK21M is an enhanced version of the SLK20M fingerprint module. It supports a fingerprint acquisition module with a large capacity and a template storage expansion function. As a result, its transmission performance is more stable, and the fingerprint comparison speed is 4 times faster than SLK20M. Integrating with the excellent fingerprint recognition algorithm, ZKFinger V10.0, independently developed by ZKTeco, the product can quickly realize offline extraction and comparison of fingerprint templates on the module and support fingerprint template comparison on the host.
It provides a complete SDK, supporting the secondary development integration of Windows, Android and Linux systems and fulfilling a variety of adaptation scenarios, such as time & attendance, access control, self-service terminals, and other equipment requiring identity authentication.

Application Scenarios

Note: This Fingerprint Acquisition Module can be integrated into POS machines, Access Control terminals and Time Attendance terminals, etc.

Features

• Light and compact size (thickness of the sensor is only 16mm)
• Local encrypted storage of 8,000 fingerprint templates
• Offline fingerprint comparison available
• Embedded 2-megapixel CMOS, providing clear and high-quality fingerprint images
• Developed based on the Linux operating system, stable and excellent security performance
• Fingerprint comparison speed is 4 times faster than SLK20M with the same storage capacity

Specifications and Pin Descriptions

Technical Parameters

Hardware| Dimensions ( L W H )| 1.72 1.4 0.6 inch/44.68 35.56 15.24mm
---|---|---
Sensor| Capture Dimensions ( W H )| 0.6 0.8 inch/15.24 * 20.32 mm
CPU| 1.0 GHz, MIPS, FPU, SIMD
Accuracy| FRR (False Rejection Rate)| < 1%
FAR (False Acceptance Rate)| < 0.0001%
Image| Distortion Rate| < 1%
Template Size| < 2KB
General| Supported Algorithm| ZKFinger V10.0
Capacity| 8,000 templates (max. 10,000)
Matching Speed| 110ms (1:1); 937ms (1:10,000)
Operating Systems| Windows 7 or later version; Android 5.1 or later version; Linux
Power Consumption| 5V, 130mA (Active) /5V, 70mA (Standby)
Operating Temperature| 0°C to 45°C / 32°F to 113°F
Operating Humidity| 20 to 90% RH (non-condensing)
Interface| USB 2.0 UART ( 115200bps/TTL 3.3V )
Connector| Molex 51021-0700(7-way;1.25mm)
Certified By| CE, FCC, RoHS

Installation on Host (Devices)

Install the module on the device, as shown below, by tightening the four screws in the holes and linking the holder to the wire.

Note: In order to ensure good and convenient fingerprint scanning, it is recommended to install the module on the wall horizontally or at an angle of 0-45 degrees.

Demo Testing Procedure

It is required that the first-time Users need to install the Device Driver before using the Fingerprint Scanner, and the process is as follows: (If the Users have already installed the Device Driver of SLK ID series Fingerprint Scanner, they can directly test without re-installing it.

1. Download the Fingerprint Acquisition Module Driver file and then double-click the setup.exe file to open.

2. On the Setup Wizard, click Next and then click Install to install the driver.

3. After the completion of the Driver installation click Finish.

4. On the Fingerprint Acquisition Module Driver file, double-click the demo file.

5. On the demo folder, double-click the Debug file to go to the folder.

6. On the Debug folder, double-click the ZKFPModule.exe to go to the Fingerprint Acquisition Interface. ZKFPModule.exe desktop shortcut can also be created to instantly open the Fingerprint Acquisition Interface.
   Click Connect to connect to SLK21M.

7. After connecting to SLK21M, on the UserID field, enter the required User ID to register fingerprint, and then click Register.
   Press the finger for three times on the Sensor area for Registration. After successful Registration, click Identify and then press the registered finger on the Sensor area for verification.

Operating Instructions

Guide to Place the Finger
It is advised to use the index finger, middle finger or little finger for Registration.

1. Proper Positioning of Finger Note: The finger needs to be pressed flatly over the Sensor area, and make sure the finger is placed exactly on the Sensor area.
2.  Improper Positioning of Finger

Cautions

1. Make sure the fingers are clean when using the Fingerprint Scanner.
2. Place the finger correctly.
3. Recommended to use the index, middle or little fingers for Registration.
4. Please avoid using the thumb and pinky fingers, because these two are clumsy when pressing on the Sensor Area.

Suggestion

1. Please keep the sensor away from dust.

2. Please use adhesive tape to clean the Sensor area.
   Do not use water or other detergents, which may damage the sensor.

3. Please use a wool-free cloth to wipe the Sensor area.

4. Please make sure the Sensor area is clean after each use.

Possible Complications

Some issues may cause difficulties to recognize the Registered fingers or during new Registration. They are:

1. Smoothed out fingers.
2. Too many wrinkles on fingers.
3.  a layer of any material on fingers.
4. Extremely dry and wet fingers.

Solutions:

1. If the user experiences any difficulty during Registration, they can either delete the fingerprint and re-register or can try using any other fingers.
2. It is recommended to choose a suitable finger with fewer wrinkles, no peeling, and a clean finger for Registration.
3. Always try to maximize the Contact Area of the finger.
4. ZKTeco suggests registering alternative Fingerprints.
5. Soaked alcohol cotton is used for cleansing if the fingers are dry, and a clean napkin is used for cleansing if the fingers are wet.

Statement on the Right to Privacy
Dear Customers:
Thank you for choosing this hybrid biometric recognition product, which was designed and manufactured by ZKTeco. As a world-renowned provider of core biometric recognition technologies, we are constantly developing and researching new products, and strive to follow the privacy laws of each country where our products are sold.
We Declare That:

1. All of our civilian fingerprint recognition devices capture characteristics, not fingerprint images, and do not involve privacy protection.
2. None of the fingerprint characteristics that we capture can be used to reconstruct an image of the original fingerprint, and do not involve privacy protection.
3. As the provider of this device, we will assume no direct or indirect responsibility for any
4. consequences that may result from your use of this device.
5. If you would like to dispute human rights or privacy issues concerning your use of our product, please directly contact your employer.

Our other product fingerprinting devices or development tools can capture original images of citizens’ fingerprints. As to whether or not this constitutes an infringement of your rights, please contact your government or the final supplier of the device. As the manufacturers of the device, we will assume no legal liability.
Note:
The law includes the following provisions on the personal freedoms of its citizens:

1. There shall be no illegal arrest, detention, search, or infringement of persons;
2. Personal dignity as related to personal freedom shall not be infringed upon;
3. A citizen’s house may not be infringed upon;
4. A citizen’s right to communication and the confidentiality of that communication is protected by law.

As a final point, we would like to further emphasize that biometric recognition is an advanced technology that will undoubtedly be used in e-commerce, banking, insurance,  legal, and other sectors in the future. Every year the world is subjected to major losses due to simple combinations of passwords. Biometric products serve to protect your identity in high-security environments.

ZKTeco Industrial Park, No. 32, Industrial Road,
Tangxia Town, Dongguan, China.
Phone : +86 769 – 82109991
Fax : +86 755 – 89602394
www.zkteco.com
Copyright © 2022 ZKTECO CO., LTD. All Rights Reserved.https://www.zkteco.com/en/

References

• ZKTeco | Biometrics and Computer Vision

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