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How Touchscreens Know Where You Tap
Your finger isn't pressing buttons—it's changing electric fields. Discover the invisible grid that detects every touch.
6 concepts
48 min
1
Conductivity: Your Finger as Conductor
Discover why your finger works on touchscreens but your glove doesn't—it's all about electrical conductivity
8 min
2
Capacitive Sensing: Electric Field Basics
Learn how invisible electric fields detect your finger's presence without any physical pressure
8 min
3
The Invisible Grid: Coordinate Detection
Uncover the hidden mesh of sensors that pinpoints exactly where you touch with millimeter precision
10 min
4
Multi-Touch: How Two Fingers Don't Confuse It
Understand how modern touchscreens track multiple fingers simultaneously without ghost touches
10 min
5
Why Gloves Don't Work and Stylus Pens Do
Explore how material properties enable or block touch detection—and how to work around it
8 min
6
Design Your Own Touch Interface
Apply everything you've learned to design custom touch gestures and interfaces for real-world challenges
12 min