Uncover the hidden mesh of sensors that pinpoints exactly where you touch with millimeter precision
Part of How Touchscreens Know Where You Tap
Educational content slides
Your touchscreen has an invisible mesh of conductors embedded in it.
The material: Indium tin oxide (ITO)—transparent and conductive.
Grid structure:
Each intersection = potential touch detection point
Test your understanding with this quiz.
Your touchscreen has a 20×15 sensor grid. You touch two opposite corners simultaneously. How many sensors need to report data to locate both touches accurately?
Complete this exercise and get AI-powered feedback.
Grid resolution isn't just about "more is better"—it's about trade-offs. Design for specific contexts.
Think about: Cost, power, precision needs, user capabilities, scale, privacy.