Whisper, which promises its users anonymity, [ records their location at each post ]( http://www.theguardian.com/world/2014/oct/16/-sp-whispers-secret-safest-place-internet-tracks-users ) . The pattern of a single user's movements can more or less identify who that user is. [ More dirt on whisper ]( http://www.theguardian.com/world/2014/oct/16/-sp-whisper-privacy-policy-terms-of-service ) .
Ссылка: https://stallman.org/archives/2014-jul-oct.html#18_October_2014_%28Whisper_records_user_locations%29