Three Under-Display Fingerprint Technologies

Technical overview of under-display fingerprint technologies—optical, ultrasonic, and capacitive—examining principles, trade-offs, production challenges, and market maturity.

Improving 3D Recognition with 1D ToF in Smartphones

Technical article about electronics and hardware engineering.

Capacitive Touchscreen Structure and Principle

Technical overview of capacitive touchscreen structure and sensing principle, covering ITO layers, electrode placement, coupling capacitance, and touch coordinate calculation.

CNN Classification of Large-Scale Wearable Motion Data

Evaluation of CNNs on wearable sensor time series for 50-class gym exercise classification, comparing 9x784, 3x784x3 and 84x84 inputs; best config reached 92.1% accuracy.

Touch Switch Circuit Using Dual D Flip-Flops

Technical overview of a touch switch circuit using a 4013 dual D flip-flop, covering monostable timing, input protection, relay drive and toggle on/off operation.

Microwave Motion Sensor Switch: Principle and Wiring

Microwave motion sensor switch: Doppler-effect detection, wiring and functions including sensitivity, anti-interference, ambient light control, timing, and concealed installation.

Touchscreen Technologies: Principles and Applications

Technical overview of touchscreen technologies comparing resistive, capacitive touch, wave-based and embedded (on-cell/in-cell) designs, applications, and performance trade-offs.

How Facial Recognition Turnstiles Work

Overview of facial recognition turnstiles for access control and attendance tracking in construction sites and factories, system components, workflows, and configurations.

Face Recognition Access Control: Functions and Benefits

Overview of face recognition access control systems: hardware, management platform, infrared imaging, centralized permissions, and deployment use cases.

Four Roles of Facial Recognition in Corporate Management

Overview of facial recognition systems for enterprise access control: modular design, employee attendance, visitor management, surveillance integration, and cost reduction.