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This is a huge indestry and not only Wallmart dose it. If you do not want to be tracked pay cash and never use any kind of discount card, otherwise your data will be tracked. Most other companies give data to AC Nelson who than dose the same kind of customer tracking for them. The only reson that Walmart stoped working with them is that there own system is so big and can get good data with out needing others. In my MBA I used a one of these systoms live to devlope a marketing plan. The level of detail you can get on customers is amazing.
The data is on customer groups not indaviduals.
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Dyslexic please excuse the spelling.
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