Define Loyalty Card Data.

Loyalty card data is information collected by a retailer that is tied to an individual shopper or household through a unique identifier (the loyalty card). This allows the retailer to track specific purchase histories, including what was bought, when, how much was spent, and in what combinations. This granular, person-specific data is invaluable for understanding and influencing individual shopping habits, creating personalized promotions, and measuring customer lifetime value. It differs from anonymous sales data or data from external panels.

B. This describes Point-of-Sale (POS) data. While it captures what is sold, it is often anonymous unless linked to a loyalty card.

C. This describes consumer panel data, where a third-party firm recruits a representative sample of households to track their purchases across all retailers.

D. This describes syndicated market data (e.g., from NielsenIQ or Circana), which aggregates sales from various retailers to show market-level trends.

1. Shugan, S. M. (2005). The Impact of Advancing Technology on Marketing and Academic Research. Marketing Science, 24(4), 532–541. (This article discusses the evolution of data sources, distinguishing scanner data, panel data, and loyalty card data, noting loyalty data's ability to track individual-level behavior at a specific retailer).

2. Northwestern University, Medill School of Journalism, Media, Integrated Marketing Communications. (n.d.). Retail Analytics Course Syllabus. Spiegel Research Center. (Course materials frequently distinguish between data types, defining loyalty data as retailer-specific and tied to individual customers for behavioral analysis).