Layers of personal information
Personal information can be divided into two layers:
- (1) identifying information, which includes identifiers and quasi-identifiers, and
- (2) related information not used for identification.
Outside of these layers is anonymous information, which is neither used for identification nor tied to a data subject through its content, purpose, or effect on the data subject.
Simply put, details like name, passport number, ID card, username, nickname, email address, phone number, IP address, and bank card are always considered personal data due to their identifying nature. Similarly, a vehicle number, handwriting, video, or photo can be classified as personal data as they can easily identify an individual. Other details like address, marital status, sex, gender, e-wallet details, health data, page views, search queries, and social media posts are considered personal data if it is known to whom they relate.
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