# Knock knock, what's there

> Research article (Proceedings of the 20th International Conference on Human-Computer Interaction with Mobile Devices and Services, 2018) · cited 21× · AI/ML

**Wikidata**: [openalex:W2888248339](https://www.wikidata.org/wiki/openalex:W2888248339)  
**Source**: https://4ort.xyz/entity/knock-knock-what-s-there