# Smartphone‐based activity recognition independent of device orientation and placement

> Research article (International Journal of Communication Systems, 2015) · cited 35× · AI/ML

**Wikidata**: [openalex:W1906411976](https://www.wikidata.org/wiki/openalex:W1906411976)  
**Source**: https://4ort.xyz/entity/smartphonebased-activity-recognition-independent-of-device-orientation-and-placement