Supermarkets may use on information collected at checkout to determine that beer and diapers are often purchased together, and they may act on this information to place those items near one another in stores.

Supermarkets or other retail stores may use information technology or data mining on checkout items to determine whether certain items are often purchased together. This will help the stores decide where to place the items in relation to each other. Many times beer will be purchased with diapers and the beer will be strategically placed near the children's diaper section but on the other side of the aisle. The stores may also just have an end cap of diapers placed on the end or middle of the aisle so it can be seen by the consumers. 

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