Some methods used to gather marketing tracking data collected at the household level are by providing panel members with wands or scanners that they use to scan the UPC codes on the products they purchase,by asking them to keep diaries of their purchases,and by having auditors conduct audits in the consumers' household.

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These are all common methods used to collect marketing tracking data at the household level.

Some Methods Used to Gather Marketing Tracking Data Collected at the Household