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 Capacitive and Other Touchscreens Detect Input

Technical overview of capacitive screen operation and touchscreens: capacitive sensing, sensor arrays, multi-touch, plus resistive and pressure-based detection methods.

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.

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.

Fixing Touchscreen Ghost Touches and Intermittent Response

Troubleshoot touchscreen leakage and ghost touches: clean, recalibrate, check connectors, update software, or replace hardware. Tips for repair and causes.

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.

Fingerprint Recognition: Types and Principles

Overview of fingerprint recognition: feature extraction, enrollment/verification, template use, and sensor technologies — optical, capacitive, and ultrasonic.

Biometrics vs Face Recognition

Compare biometrics and face recognition: definitions, technical process, application areas, key differences, and privacy/security considerations.

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.

Fixing Capacitive Touchscreen Malfunctions

How capacitive touchscreens work and causes of touchscreen drift (capacitance drift), including contamination, unstable supply, temperature, static, plus troubleshooting steps.