"De-identification" refers to removing personal information from records to protect privacy. Once data is de-identified, it cannot be traced back to you because it no longer contains personal details.
To de-identify data, various types of information are removed, such as: names, specific geographic details (beyond the first three digits of a postal code), phone numbers, email addresses, social security and personal health numbers, health insurance and account numbers, license numbers, device identifiers, URLs and IP addresses, biometric data, and full-face photos.
For more details, refer to the Office of the Privacy Commissioner of Canada and other privacy law offices.