Patent attributes
A method, an apparatus and a computer program for tracking location of users without disclosing Personally Identifiable Information (PII). The method comprises analyzing sequences of location events of a user over time to determine a Point Of Interest (POI) of the user. In response to determining that the POI is PII-revealing POI; obfuscating the POI, by generating a pseudolocation identifier of the POI indicative of a semantic meaning thereof to the user without revealing a geographic location of the POI. The method further comprises generating an anonymized sequence of location events of the user based on the sequence of location events, that comprises the pseudolocation identifier to represent location events associated with the POI, and absent of the geographic location thereof. The anonymized sequence of location events may be provided a third party to analyze behavior of the user without divulging identity of the user.
