# Hand Gesture Recognition Based on Active Ultrasonic Sensing of Smartphone: A Survey

> Research article (IEEE Access, 2019) · cited 53× · AI/ML

**Wikidata**: [openalex:W2967757528](https://www.wikidata.org/wiki/openalex:W2967757528)  
**Source**: https://4ort.xyz/entity/hand-gesture-recognition-based-on-active-ultrasonic-sensing-of-smartphone-a-survey