Deep learning-based face detection and recognition

Technical overview of face recognition pipeline and 68-point facial landmark localization using dlib and OpenCV, with a Python example for detection, ROI extraction, and visualization.

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.

Under-Display Fingerprint Methods and Development Trends

Overview of under-display fingerprint recognition technologies (optical, ultrasonic, capacitive), comparing implementation trade-offs, production readiness, and industry trends.

Face Fusion with Deep Learning: Technical Analysis

Practical engineer's guide to face fusion using Delaunay triangulation, affine transforms and seamless cloning, covering landmark workflows and triangle-based warping.

What Is Hover Touch and How It Works

Overview of hover touch (pre-touch): how capacitive self- and mutual-capacitance sensing enables hover detection on phones, tradeoffs, and practical applications.

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.

How the Touchscreen Was Invented

Technical overview of touchscreen history and evolution, from Johnson's early prototype to Hurst's resistive touchscreen, adoption, materials, and multi-touch trends.

Human-Computer Interaction: Roles and Main Interaction Methods

Overview of human-computer interaction (HCI): principles, roles and main interface types—GUI, voice, touch, gesture, VR/AR and brain-computer interfaces.

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.

How Smartphone Touchscreens Work

Overview of resistive and capacitive touchscreens: how capacitive touch detection uses coupling capacitance and ITO sensing layers, plus limitations like wet-screen drift.