ADVERTISING SYSTEM AND METHOD FOR TARGETED ADVERTISING WITHOUT PERSONAL INFORMATION EXPOSURE

摘要

The present invention generates a distributed key composed of a user key, an agent key, and a backup key, and manages the user''s personal data using the user agent and distributed key assigned to each user, so that the user''s personal information can be directly accessed from the outside. It relates to an advertisement system and method capable of targeting advertisement without exposing personal information.