Carrefour and convenience store group Nisa are piloting a new technology that uses Bluetooth Low Energy (BLE) beacons attached to trolleys and baskets to track a shopper’s journey around the store. The beacons on the shopping trolleys and baskets work in conjunction with sensors attached to the ceiling of the store that pick up the signals emitted. Location data collected by the sensors is then fed to a cloud-based server for analysis. Three Carrefour locations in Madrid are participating in the trial along with three Nisa stores in London. Merchants are then provided with data on how shoppers move around their store, including their overall time in the store and how long they spend in particular product aisles. Data is currently collected anonymously but an app that would enable location data to be tied to an individual customer is due to be added in the future.