# Investigating sources of inaccuracy in wearable optical heart rate sensors

> Research article (npj Digital Medicine, 2020) · cited 629× · AI/ML

**Wikidata**: [openalex:W3005348902](https://www.wikidata.org/wiki/openalex:W3005348902)  
**Source**: https://4ort.xyz/entity/investigating-sources-of-inaccuracy-in-wearable-optical-heart-rate-sensors