Usage patterns? Fridge being opened means someone is home. That data point is meaningless in isolation, but can be valuable if you want to use it to confirm/den

Usage patterns? Fridge being opened means someone is home. That data point is meaningless in isolation, but can be valuable if you want to use it to confirm/deny other data points - let's say another data broker is trying to get an accurate ad targeting profile but only has breadcrumbs here and there such as IP addresses, user-agents that by themselves don't mean much, but they can use other data points (such as fridge activity data) to link your otherwise-anonymous IP-based profile if they see that the only times this IP lights up is when the fridge was also used recently. Whether that's currently done is up for debate - maybe there are other lower-hanging fruits that are easier to do, but if you've exhausted all your other options and still want even more accurate profiles, I don't see why you wouldn't do it.