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A new report by the World Privacy Forum describes the proliferation of "consumer scores" and calls for rules that would make them more transparent to the public. These scores differ substantially from traditional credit scores, which are compiled using loan payment histories from credit reports. Instead, consumer scores rely on other data, such as retail purchase histories, demographic information and social media activity. Consumer lenders use some of them to evaluate loan applicants. Here's a rundown of selected scores and some of the World Privacy Forum's related warnings, including one that calls for updating existing consumer protection regulations.

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