# Heatmaps, Shadows, Bubbles, Rays: Comparing Mid-Air Pen Position Visualizations in Handheld AR

> Research article (Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems, 2020) · cited 18× · AI/ML

**Wikidata**: [openalex:W3032143210](https://www.wikidata.org/wiki/openalex:W3032143210)  
**Source**: https://4ort.xyz/entity/heatmaps-shadows-bubbles-rays-comparing-mid-air-pen-position-visualizations-in-handheld-ar