3D Face vs Fingerprint: Which Unlock Method Survives an Export Market
Both work in a showroom. The difference shows up in month six, when the door is dusty, the user’s hands are wet and the installer is three countries away.
SMART LOCKS · ENGINEERED IN GUANGZHOU
3D Face vs Fingerprint: Which Unlock Method Survives an Export Market
Journal — engineering and sourcing notes | InspirePulse
Notes from people who test the lock, not the brochure.
Why face-recognition locks fail in hot climates
— The datasheet says −20 °C to +40 °C. The afternoon surface temperature of a steel gate in Lagos or Ho Chi Minh City is 60 °C. That gap is where most field failures come from, and it is not the fingerprint sensor. ## What fails first **The lithium cell.** A 4200 mAh Li-ion pack […]
Inside the 72-hour test gate every lock must pass
— A lock is mechanical and electronic at once, and the two fail in different ways. These are the gates every unit passes before it is packed. ## Gate 1 — Incoming components Semiconductor sensors, face modules, cells, mortise bodies and cylinders are sampled before assembly: sensor response on a reference finger, cell voltage and […]
Why 3D face recognition beats 2D on a front door
A 2D camera compares a picture of a face with a stored picture. A 3D sensor measures depth. That single difference decides whether a printed photo,…
Palm vein vs fingerprint: which one survives real hands
Both are biometrics, but they read different things. A fingerprint sensor reads the surface of the skin. A palm-vein sensor reads haemoglobin beneath it, using near-infrared…
Battery life maths for a smart lock
A 4200 mAh pack sounds large until you count the radio. Most “battery problems” reported by installers are really specification problems: the wrong capacity for the…
IP rating is not the same as weather resistance
IP65 on a datasheet means dust-tight and protected against water jets. It does not describe what happens after two years of coastal salt fog, UV exposure…
Why a lock needs an indoor screen at all
A camera on the outside of the door is only useful if someone can see the image. That is the whole argument for an indoor screen.…