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.

Face Recognition: Principles and Process

Face recognition primer describing the technical pipeline: image acquisition and detection, data preprocessing, feature extraction, and similarity-based matching.

Capacitive Touchscreen Design Principles and Circuit Layout

Introduction to capacitive touch panel design covering electronic principles, touch controller ICs, ITO patterning, layout, grounding, ESD and structural stackups/materials.

Balancing High Performance and Privacy in Biometric Systems

Overview of MoQi's method reframing fingerprint recognition as high-precision image search enabling second-scale, billion-scale matching and privacy-preserving biometric templates.

Major Face Recognition Methods

Technical overview of regional feature methods in face recognition, comparing geometric features, PCA/eigenfaces, neural networks, elastic graph matching, LHD and SVM.

Can facial recognition reduce retail theft?

Analysis of facial recognition in retail: how connected databases, camera placement and privacy concerns affect its effectiveness against shoplifting and evolving theft tactics.

Access Control System Components and Installation

Overview of access control system components, including identity recognition, sensors, controllers, locks, wiring, and detailed installation, commissioning and grounding guidelines.

How Face Recognition Devices Work and Their Uses

Overview of face recognition devices: 3D image processing, face localization, preprocessing and matching workflows, and applications in access control and attendance systems.

Four Advantages and Challenges of Face Recognition

Face recognition: advantages (contactless operation, no operator, broad applicability) and technical challenges such as twin similarity, disguise and post-surgery changes.

Advantages of Face Recognition vs Fingerprint Recognition

Overview of face recognition systems: biometric image-processing, real-time 3D identification, template storage and access control, with comparison to fingerprint recognition.

Face Recognition System Uses and Selection Criteria

Face recognition systems: applications, selection factors (security, accuracy, cost) and technical challenges such as low inter-individual differences and facial variability.