| http://www.w3.org/ns/prov#value | - their exact PINs, but allowed the researchers to know whether the PINs were the users' birth dates or years, dates or years of important events in their lives, the lives of other persons close to them or in history, patterns or other numbers such as the digits of a phone number, a ZIP code or postal code, their bank account number, a non-government identification number, etc.
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