Lock
Lock is a streamlined, edge-based identity verification solution for smart home security( Smart lock ) . It delivers high-precision recognition directly on-device, ensuring a fast, secure, and privacy-first user experience without the need for heavy infrastructure.
Main Features
Ultra-Secure and Highly Accurate Identity Verification for Smart Locks
0 Occurrence
False Recognition Rate
Has not occurred to date — industry-leading accuracy in real-world deployments.
< 0.8s
Recognition Speed
Cold start + recognition total time consumption, delivering near-instant access.
5 – 25 cm
Recognition Distance
Wide-range recognition distance for flexible hand placement and natural interaction.
80,000 lux
Outdoor Lighting Support
Reliable performance under extreme outdoor lighting conditions.
25° + 360°
Palm Posture Tolerance
Recognizable with 25° tilt left/right and full 360° rotation flexibility.
Unbreakable
Liveness Detection
Defense against all live-body attacks including plastic hand molds and infrared paper.
Payment-Grade Palm Vein Verification for Smart Door Locks
Tencent PalmAI has established an in-depth collaboration with Xiaomi Technology in the smart door lock sector. The palm vein recognition feature in the M30 and M40 series has received positive feedback from end users, with annual shipments of enabled door locks continuing to grow. This technology is increasingly favored by consumers due to its rapid identification, flexible palm positioning, contactless operation, resistance to replication and ability to distinguish between similar family members.
Tencent Palm AI and KAADAS have worked closely for years within the smart lock ecosystem, jointly advancing safer and more reliable biometric unlocking solutions. With deep expertise in palm vein technology and algorithm optimization, Tencent Cloud supports KAADAS in integrating this capability across its product portfolio, delivering more stable recognition performance and stronger anti-spoofing protection for home-entry scenarios, while earning strong user feedback and market recognition. Unlike external biometrics such as facial recognition that can be captured by cameras, vein patterns are subcutaneous signals, offering greater resistance to interference and replication. In recent years, more smart lock manufacturers have adopted this technology to meet the dual demand for enhanced security and improved usability.
Tencent PalmAI and Lockin Technology have maintained a close partnership in the smart door lock industry for many years. Leveraging extensive expertise in palm vein technology, Tencent Cloud has enabled the V5 series with this capability, which has been well received by millions of households. Compared with facial recognition and other biometric models, vein-based identification - an internal biometric feature - offers greater stability and stronger resistance to replication. In recent years, adoption across the smart lock industry has continued to grow.
For years, Tencent Palm AI and Desman have maintained close collaboration in the smart door lock space. Leveraging deep expertise in palm vein technology and production-grade deployment, Tencent Cloud provides key technical support for Desman products, enabling a more secure and convenient unlocking experience trusted by many households. Compared with external biometrics such as facial recognition, vein patterns are internal signals that are less affected by lighting and angles and are significantly harder to replicate. As user Tencent Cloud palm vein technology powers Xiaomi M30 & M40 series smart locks, delivering fast, contactless, and highly accurate palm vein recognition for home entry scenarios.expectations for security and privacy continue to rise, this technology is becoming an important upgrade direction across the smart lock industry.
Solution Architecture
End-to-end palm vein smart lock system — from optical sensing module to lock controller, communicating via standard palm recognition protocol over serial interface.
◉Optical Module
◉Lock Controller Module
