Comment by bryanrasmussen

>I believe shopping malls often use such signals (wifi, bluetooth) to track what your travel pattern through the mall is. They know what section of the store you spend most of your time in and what storefronts you stall at.

hmm, I wonder if there is anything about using this to combat shoplifting... short google later, seems there is, but mostly everything I'm finding is just brochures and breathless corporate announcements.

found this uni project https://capstone.cse.msu.edu/2020-01/projects/meijer/