AI engineering glossary · AI ethics law product
What is PII (personally identifiable information)?
Personally identifiable information (also called PII): Any information that can identify a specific person, alone or combined with other data, such as a name, phone number, email, address or government ID number. AI teams must find and protect it in training data, logs and prompts.
Personally identifiable information: an example
A support-chat log containing a customer's name and mobile number is PII and must be masked before it is used to fine-tune a model.
Related terms
More AI ethics law product terms
- Post-hoc explanation
- Predictive parity
- Privacy budget
- Privacy by design
- Prohibited AI practices
- Protected attribute
- Proxy variable
- Pseudonymization
Where you learn it
Personally identifiable information is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.