Java Tech Enthusiast

Apr 25, 2026 · Fundamentals

Turn a MacBook into a Touchscreen in 16 Hours for Under $7 Using Only a Mirror

A team led by Anish Athalye built a $1‑$7 hardware add‑on that lets a MacBook’s built‑in webcam detect finger touches via a tiny mirror, using classic computer‑vision techniques to map those touches to screen coordinates and generate mouse events.