Footfall counters, from infrared beams to 3D sensors, count how many times the entrance is crossed. They are simple and affordable, and in fashion retail they are commonly used to estimate conversion by dividing tickets by visits. What they cannot see is the store itself: flow, dwell time and the route between the door and the checkout stay unknown.
Shoppermotion fills that gap. Tags on trolleys and baskets record the full path of each anonymous trip, so you get customer flow, dwell time by zone and conversion at the shelf, and each trip is matched with its ticket.
We wrote about this shift in the evolution of store people counters: from counting visitors at the door to measuring each journey, much like web analytics went from hit counters to full visitor behaviour.