Would love to read more - could you track down the link? It's interesting to think about the problem both from the perspective of the retailer AND from the per

Would love to read more - could you track down the link? It's interesting to think about the problem both from the perspective of the retailer AND from the perspective of the investor. I mean a retailer can just look at their sales volume as an estimate for customer volume but obviously that data isn't available to outsiders. One massive opportunity I've been swirling in my mind is what if you applied image recognition to counting foot traffic. Like if you could just point a webcam at a storefront and automatically count foot traffic - that would be very valuable information.