Supermarkets may use data mining to analyse and figure out customer habits behaviours such as purchasing patterns which can help on what products need restocking the most. This also be used for making product placements that cater average ultimately increase sales. Data separate groups from others so supermarket allow targeted marketing strategies. could hire demographic providers/companies offer information about population in a specific area include their age income household number then target customers into staying constantly buying at supermarket. additionally economic indicators give current situation unemployment rate consumer spending trends. usually loyalty programs/cards sales offers have joined it. A account hold use purchase history personal (Age location etc) track shopping habits. Online same card can. Alternatively social media engage with costumes find customers’ preferences are.