Vape detection algorithms examine particle size, density

https://www.wivb.com/business/press-releases/globenewswire/9676076/zeptive-software-update-boosts-vape-detection-performance-and-adds-new-features-free-update-for-all-customers-with-zeptives-custom-communications-module

Vape detection algorithms examine particle size, density, and chemical signatures to identify e-cigarette vapor from everyday aerosols.