# RF-Wri: An Efficient Framework for RF-Based Device-Free Air-Writing Recognition

> Research article (IEEE Sensors Journal, 2021) · cited 24× · AI/ML

**Wikidata**: [openalex:W3165659532](https://www.wikidata.org/wiki/openalex:W3165659532)  
**Source**: https://4ort.xyz/entity/rf-wri-an-efficient-framework-for-rf-based-device-free-air-writing-recognition