But PrimeSense goes further than that. In our book we reported on an Argentinian company called Shopperception that uses a PrimeSense device to watch a shopper in a Walmart store. It can see the gender of the shopper but not discern the person’s identity. When the shopper reaches for a box of Cheerios, an iPad display offers him a discount on either that brand or a competing brand. If the shopper is a loyalty club member, then the store will know his history and patterns related to when he shops as well as the route he takes through the store. It allows retailers to pinpoint marketing offers, personalizing messages to each shopper’s based on that shopper’s location and intent. This is powerful stuff.