[kbenson]

Keep in mind leaning on a counter or table, putting a leg up, eating and drinking. In the end, you are also putting weight sensors, which are fairly notorious for being fiddly, in a bunch of chairs. The wider you have to make the margin or error, the more false positives you'll get. I imagine an a medium size casino there's a lot of people that weigh ~180 lbs. In the end, it's a passive tracking system, where you get data events and then try to classify them, which I think is more error prone than actively tracking the people themselves through other means. With as many cameras as they have, it probably easier (at this point) to just make sure they always overlap, and have a motion tracking algorithm track people across the video feeds.