I mean… depending on how new an item is and what “tier” the restaurant is? They are 100% watching for stuff like that and probably making a note that you got up after eating only a quarter of your burger. Because if the burger were good, you would want to finish it. Is it too sloppy? Did you feel the need to wash your hands mid bite? Did it make you nauseous?

Same with taking out your phone. Does it look like you are telling a friend what a great burger you had? Or are you feeling bloated and trying to digest a bit before you eat more?

This level of market analysis is not at all new. Streaming services just have a much easier time automating it but… give it time until startups are selling cameras to monitor the dining area and automate analytics based on who ordered what and did what.