Privacy is one of those abstract entities that can be hard to define, but you know it when you see it -- or when you see it violated. In the supermarket industry, privacy became an "issue" with the rise of loyalty cards in the late 1980s and the accompanying gathering of personal shopping information about each loyalty card customer. The issue has gained further scrutiny now with the advent of the Electronic Product Code, the new digital identification system empowered by radio frequency ...
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