Patent attributes
In general, the invention relates to a method of tracking purchases for a consumer using a unique identifier associated with the consumer. The method includes receiving first itemized data and the unique identifier from a first merchant system of a first merchant, where the first itemized data includes each item purchased in a first transaction associated with the consumer. The method further includes receiving second itemized data and the unique identifier from a second merchant system of a second merchant, where the second itemized data includes each item purchased in a second transaction associated with the consumer. The method further includes storing the first itemized data and the second itemized data based on the unique identifier to obtain aggregated itemized data, where the aggregated itemized data is categorized at an item level.