It's going to be similar bullshit to what Halo uses in the highschool vape sensors. A bunch of particulate sensors for like PM1, PM2.5, PM10, sniffing out VOCs,

It's going to be similar bullshit to what Halo uses in the highschool vape sensors. A bunch of particulate sensors for like PM1, PM2.5, PM10, sniffing out VOCs, and then they consider any tripping of any of that to be a "smoke" sesh. Edit: Oh. Rest is just NoiseAware. They're just reselling NoiseAware sensors which are just - yes - a bunch of particulate sensors hooked up to an ESP32 hooked to a web dashboard.