



Fingerprint authentication has become a standard feature in modern access control systems, from office buildings to residential complexes. When selecting a module, manufacturers and system integrators often compare two mainstream technologies: optical and capacitive fingerprint sensors.
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Step-by-step guide on integrating a UART or USB optical fingerprint module into smart locks. Covers hardware wiring, firmware development, security settings, and performance optimization.
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While optical fingerprint modules are suitable for budget-friendly projects with ample space, capacitive modules are becoming the mainstream choice for high-security and embedded applications due to their superior security against fake fingerprints, compact size, and lower power consumption
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