Comment by megous

https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CEL...

(1) ‘personal data’ means any information relating to an identified or identifiable natural person (‘data subject’); an identifiable natural person is one who can be identified, directly or indirectly, in particular by reference to an identifier such as a name, an identification number, location data, an online identifier or to one or more factors specific to the physical, physiological, genetic, mental, economic, cultural or social identity of that natural person;

GDPR accepts that person can potentially be identified with reference to location data.

Anyway, "Personally identifiable information" is a weird term. Person can be identifiable in various ways. Information is just information. GDPR doesn't use this term.