How Motion-Sensing Lights Detect Human Presence

Technical overview of pyroelectric sensor-based PIR motion-sensing lights, detailing Fresnel lens optics, detection principle, sensor materials, installation and key usage factors.

Resistive vs Capacitive Touchscreens: Concepts and Differences

Overview of resistive touchscreen and capacitive touchscreen technologies: operating principles, pros and cons, multi-touch behavior, durability, and input suitability.

Capacitive Touchscreen vs TFT LCD: Key Differences

Explains differences between a capacitive touchscreen and a TFT LCD: the glass touch sensor detects input while the TFT LCD renders images, often stacked in smartphones.

Common Touchscreen Technologies and How Mobile Touchscreens Work

Overview of common touchscreen technologies and how mobile touch works, explaining capacitive and resistive touchscreen principles, SAW, optical and light-guide methods.

Algorithm for Multi-touch on Resistive Touchscreens

Overview of two-point and position-based multi-touch on resistive touchscreens, covering contact resistance, ghost points, false touches, and averaging to improve coordinate accuracy.

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.

Limitations of Face Recognition Technology

Overview of face recognition: process, application categories, accuracy limits, unresolved challenges like occlusion and aging, and security considerations.

Principles of Touch-Sensitive Switches

Overview of touch-sensing methods - capacitive touch, resistive touch, and radio-reception sensing - comparing principles, implementations, and environmental limitations.

Touchscreen Object Recognition and Capacitive vs Resistive Differences

Overview of touchscreen object recognition methods—capacitive touchscreen, resistive touchscreen, SAW, laser, inductive—and practical touchscreen testing and comparison.

Capacitive Touchscreen Specifications and Types

Technical overview of capacitive touchscreen specs and types, covering report rate, accuracy, sensitivity, projected/surface capacitive designs and evaluation criteria.