Amazon.com: Crayola Pip-Squeaks Skinnies Washable Markers, 64 count, Great for Home or School, Perfect Art Tools & Pip Squeaks Washable Markers, Marker Set for Kids, Gifts, Ages 4, 5, 6, 7 : Toys & Games
Fiducial markers - Virtual Reality, Augmented Reality Wiki - VR AR & XR Wiki
ARchi VR - Capture & augment rooms in AR
Apple's AR could use invisible markers on iPhones and make a 3D model of your finger | AppleInsider
April-Tag-VR-FullBody-Tracker/README.md at master · ju1ce/April-Tag-VR-FullBody-Tracker · GitHub
Overview of Positional Tracking Technologies for Virtual Reality
VR Markers | Behance
Varjo Markers | Varjo for developers
Driver4VR - Body Tracking with Camera Markers - Alpha Relase - Driver4VR - enhance your VR
OptiTrack - Motion Capture for Virtual Reality
Marker-based Positional Tracking | in magic we trust
Computers | Free Full-Text | Colocation for SLAM-Tracked VR Headsets with Hand Tracking
Hi-Res VR Map Markers at Skyrim Special Edition Nexus - Mods and Community