Is it magic? No, it’s a neat hack that uses ... The basic idea is that a retroreflective dot on the end of the wand reflects light from a set of infra-red LEDs around the camera.

The end result is an isolated point of light representing the tip of the wand, which can be fed into Open CV’s optical flow function to show [Adam] what shape the user was trying to make.

light squeezers and broadband optical-communication networks. “I refer to it as a magic wand — you feel like a wizard because there’s so many applications, from ultralow-noise space ...

Universal Orlando Resort is getting a little more magical for Harry Potter fans. The Florida resort debuted a new generation of wands in Feb. 2025, that look and feel closer to the real thing ...