The AS608 fingerprint module is a high-performance, integrated fingerprint recognition module that combines both the optical path and fingerprint processing components. It features a compact size, low power consumption, and simple interface, while offering excellent reliability, fast recognition speed, and strong adaptability to both dry and wet fingers. The module supports USB and UART communication interfaces, allowing users to control it easily through simple serial or USB communication protocols without needing to delve into complex image processing and fingerprint recognition algorithms. The AS608 module is commonly used in applications such as fingerprint password locks, attendance systems, and access control systems, providing an efficient and convenient fingerprint authentication solution.

WORKING PRINCIPLE

1. Fingerprint Features
   Fingerprint algorithms extract features from the captured fingerprint image, which represent the unique information of the fingerprint. The storage, comparison, and search of fingerprints are all performed by processing these fingerprint features.
2. Fingerprint Processing
   Fingerprint processing involves two main stages: fingerprint enrollment and fingerprint matching. Fingerprint matching can be further divided into two methods: fingerprint comparison (1:1) and fingerprint search (1:N).
   • Fingerprint Enrollment: During the enrollment process, each fingerprint is captured twice. The two captured images are processed and merged to create a template, which is then stored in the module.
   • Fingerprint Matching: During the matching process, a fingerprint image is captured by the fingerprint sensor, processed, and then compared with the stored fingerprint templates in the module. If the image is matched with a specific template in the module, it is called fingerprint comparison (1:1). If the image is matched with multiple templates in the module, it is called fingerprint search (1:N). The module then provides the matching result (either “pass” or “fail”).

Feature:

• The AS608 Optical Fingerprint Recognition Module has several key features that make it a reliable and efficient solution for fingerprint authentication.
• It uses a high-quality optical fingerprint sensor, ensuring high-quality image capture and accurate feature extraction. With a 500dpi resolution, it captures clear and detailed fingerprint images for precise recognition.
• The fingerprint enrollment time is less than 1 second, allowing for quick and efficient registration. The module supports 1:1 and 1:N matching modes, providing fast authentication and search processes.
• It can store up to 300 fingerprint templates, making it suitable for small to medium-sized systems like access control, time attendance, and security devices.
• The module is designed with low power consumption (less than 60mA during operation), making it energy-efficient, which is ideal for battery-powered applications.
• With a compact size (23.3mm * 20.3mm * 48.1mm) and an integrated design, the AS608 module is easy to embed in devices like locks, attendance machines, or access control systems without occupying much space.

Application:

• Office Buildings: Used to control access to restricted areas, ensuring that only authorized personnel can enter certain rooms or zones.
• Employee Attendance: The AS608 can be integrated into attendance machines to record employees’ working hours, providing a reliable and secure method to prevent time fraud.
• The AS608 module can be used in secure payment terminals, allowing users to authenticate payments through fingerprint recognition instead of PINs or passwords, enhancing both security and convenience.
• Mobile Devices and Laptops: Integrating the module into mobile devices or personal computers to provide secure biometric authentication for device unlocking.
• Border Control/Immigration: Used in immigration and border security for identifying and verifying individuals, improving security and processing speed.