Tips to follow if you're trapped in a crushing crowd

> Density is really the critical variable, that's the first thing we measure. It's expressed as the number of people per square meter

I wonder to what degree this is detectable via computer vision? I would imagine most places already have some kind of CCTV on the crowd, so you should be able to retrofit a warning system into the existing security system (if there's any kind of standard, which might be a bold assumption).

Hopefully that could be done cheaply enough to make it reasonable to require them in venues prone to overcrowding, like smoke detectors.

basically says don’t be in one twice lol