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.

Fixing Capacitive Touchscreen Malfunctions

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

Face Recognition Access Control: Functions and Uses

Technical overview of face recognition access control systems, covering facial authentication, turnstile integration, security features, centralized management, and use cases.

Four Common Touchscreen Repair Techniques

Practical touchscreen repair cases and troubleshooting guide covering diagnostics, backlight and circuit fixes, calibration issues, grounding and connector remedies

Biometrics vs Face Recognition

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

Palmprint Recognition: How It Works vs Fingerprint

Overview of palmprint recognition for payments: CIS imaging (global-shutter vs rolling-shutter, BSI+global-shutter), algorithm pipeline, vein verification, and market trade-offs.

Does a Capacitive Screen Cause Ghosting While Charging?

Explains how capacitive touchscreen errors while charging stem from power-supply instability and charger noise, and recommends using genuine chargers, filtering, or firmware fixes.

Capacitive Touch Sensing Using MCU Microcontrollers

Technical overview of touch sensing for microcontrollers, comparing capacitive and resistive interfaces, dedicated touch ICs, and MCU-based implementation trade-offs.

Three Methods for Fingerprint Recognition

Technical overview of under-display fingerprint recognition methods: optical, ultrasonic, and capacitive; compares implementations, production maturity, and development trends.

Six Ways to Fix an Unresponsive Smartphone Touchscreen

Diagnose and fix intermittent smartphone touchscreen unresponsiveness with six steps: test chargers/outlets, charge from PC, reboot, use recovery mode and avoid unofficial ROMs.