Don’t Be Fooled by “Palm Swipe” — Some Palm Readers Can’t Even Stop a Photo (Dualmode Is the Real Security)

Palm vein recognition, as a highly secure biometric technology, has been rapidly adopted in payments, transportation, security, and other fields in recent years. This article takes the dualmode palm vein solution of LESHUN Information Technology as the technical blueprint, systematically explaining its technical architecture, imaging principles, algorithm features, and largescale deployment cases, aiming to provide professional technical reference for industry partners and customers.

I. Technical Architecture: Palm Print + Palm Vein Dualmode Fusion

LESHUN’s palm vein solution adopts a dualmode fusion architecture combining palm print (surface features) and palm vein (subcutaneous features). Compared with singlemode biometrics (face only, fingerprint only, or single vein only), the dualmode solution offers significant advantages in the following dimensions:

Technical implementation: The device integrates an independent optical module that captures both palm print images (visible light / nearinfrared) and palm vein images (940nm nearinfrared). Feature extraction and matching are performed by an ondevice embedded algorithm. Raw biometric images are never uploaded.

Security certification: This solution has passed relevant security certifications from the National Financial Technology Evaluation Center (NFEC) and the Third Research Institute of the Ministry of Public Security, meeting financial paymentgrade security standards.

II. Imaging & Optical System: Rugged Design Against Environmental Interference

The core challenge of palm vein recognition is: how to consistently capture clear vein images under various lighting conditions and hand states. LESHUN’s solution incorporates the following key technologies:

2.1 940nm NearInfrared Dedicated Light Source

Wavelength selected at 940nm, near the hemoglobin absorption peak, penetrating approximately 1–3 mm below the skin surface to clearly image the subcutaneous vein network.

 Unaffected by visible light (sunlight, indoor lighting), compatible with outdoor and strong backlight scenarios.

 2.2 Custom ISP & Softcore AE Algorithm

Auto Exposure (AE): When a palm approaches the sensor, the system completes light metering within milliseconds and dynamically adjusts exposure parameters to ensure clear vein images.

 Auto Focus (AF): Supports palm placement anywhere within 5–12 cm without precise alignment.

 Wide Dynamic Range: Stable imaging even under 50,000 Lux strong backlight.

 2.3 National SecretGrade Security Encryption

The module integrates a national secret algorithm encryption chip, performing ondevice encryption and secure storage of captured images and feature data, preventing interception or tampering at the link layer.

 2.4 Module Design Specifications

III. AI Algorithm & User Adaptability

LESHUN’s algorithm is trained on largescale, multidimensional datasets covering different ages, genders, skin tones, and hand conditions (dry, wet, mildly soiled, calloused, etc.). It offers the following features:

High interference resistance: Insensitive to palm rotation (≤30°), pitch (≤30°), hand size differences, surface reflections, etc.

Integrated liveness detection: Liveness is directly determined via vein blood flow characteristics, requiring no additional gestures or hardware, effectively defeating attacks using photos, videos, 3D models, or silicone replicas.

 Extremely low false acceptance rate: Under dualmode verification, measured FAR < 1/1,000,000, exceeding financial industry standards.

 Suitable for special populations: Works well for elderly people with worn fingerprints, as well as dry, peeling, or greasy hands.

IV. LargeScale Deployment Cases: WeChat Pay & Beijing Subway

The maturity of a technology is ultimately proven by its largescale, highconcurrency use in realworld scenarios. LESHUN’s palm vein solution has been validated in the following benchmark projects:

4.1 WeChat Palm Payment

 LESHUN is a core hardware supplier for WeChat Palm Payment. Its modules have been deployed in thousands of merchants across China (Meiyijia, Guangdong 7ELEVEN, PetroChina, etc.).

 Daily transaction volume exceeds hundreds of thousands, with system stability >99.9% and recognition success rate >98%.

4.2 Beijing Subway Daxing Airport Line

 Since May 2023, the entire line has adopted palm payment for boarding. Passengers use LESHUN modules to pass through gates.

Peak daily ridership exceeds 50,000, recognition response time <0.5 seconds, zero security incidents to date.

4.3 Other Typical Scenarios

Campus: Canteen payment, dormitory access, library borrowing.

Enterprise: Employee attendance, visitor management, meeting room booking.

Fitness / Clubs: Member checkin, locker linkage, personal training session validation.

Finance: Bank VIP identification, vault access control.

V. Competitor Comparison (Technical Selection Reference)

VI. Partnership & Integration Models

LESHUN offers the following collaboration models to global partners:

Module Procurement: Supply of HandPass series standard modules, supporting OEM/ODM customization.

Complete Terminal Solutions: Provide integrated terminals such as the LSP982 (including screen, enclosure, power management).

 Software Integration: Provide SDKs, API documentation, and sample code for secondary development.

 Distribution / Agency: Recruiting regional distributors in overseas markets.

 Contact Us
Website: https://leshuntech.com/
Email: leshun2025@gmail.com
WhatsApp: +86 13429140385

Conclusion

Palm vein technology is at a critical stage moving from “usable” to “mass adoption.” With its four core capabilities — dualmode high security, allweather stable imaging, toptier paymentscenario validation, and modular ease of integration — LESHUN has become a leading solution provider in this field. Whether you are a system integrator, terminal equipment manufacturer, or payment/security enterprise seeking technology upgrades, feel free to contact us to jointly advance the realworld application of biometric technology.