reidentification

Recognizing someone again

Reidentification is the process of identifying someone again, especially connecting supposedly anonymous data back to a specific person.

In privacy contexts, it refers to techniques that unmask individuals from datasets that were meant to be anonymized: Researchers demonstrated reidentification of patients using zip codes and birth dates.

The term also appears in philosophy, referring to recognizing something as the same entity encountered before.

privacy

anonymity

Unknown identity state

exposure · breach · personal data · sensitive data · profiling · tracking · surveillance · fingerprinting · PII · k-anonymity

technical

algorithm

Finite problem-solving procedure

correlation · biometrics · facial recognition · datasets · attributes · machine learning · background knowledge · unique identifiers · metadata · behavioral patterns

forensic

verification

Proving something accurate

DNA · fingerprints · dental records · remains · missing persons · cold case · witness · suspect · evidence · matching

research

datasets

Organized digital records

genomics · medical records · census · surveys · cohort · publication · data sharing · scientific · pseudonymized · participant

compliance

GDPR

EU data protection law

consent · audit · accountability · transparency · governance · enforcement · penalties · fines · certification · oversight

Categories
Opposites
temporal sequence of identification

reidentificationdiscovery

Act of finding something

first sighting

identity linkage vs. identity protection

reidentificationanonymization

Removing identifying information

de-identification · anonymizing · deidentification · pseudonymization · obfuscation

recognition vs. non-recognition

reidentificationmisidentification

Wrongly recognizing something

non-recognition · identity loss · forgetting · non-detection · anonymity

Family

identity, identify, identified, identification, unidentified, identifying, identifiable, identifier, unidentifiable

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