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After searching the Internet for an item you want to buy or an area of ​​interest, related advertisements continue to appear.



There are many people who feel uncomfortable because they seem to be monitored daily, but reporter Ki-tae Kim pointed out how much discussion is being conducted to resolve this.



<Reporter>



I searched for keywords related to'men's shoes' on Naver and Google using a smartphone app and a PC.



After a while, on Facebook's timeline, advertisements line up for handmade shoes and luxury shopping malls.



When I searched for a trip to Jeju Island in the same way, advertisements related to hotels were poured out.



[Man in his 30s: How do you know that I searched for this? How do they know (advertise) the records I searched for?]



[Woman in her 30s: There are things I don't want to disclose. Something secret. How far in the world do you know?] This



is a method of tracking the user's activity with the identification ID of the mobile terminal and displaying advertisements that suit their tastes.



SNU Professor Hak-Soo Ko's team analyzed 886 apps and found that 93% of them were collecting user information and sending advertisement-related information.



In particular, more than half of them were surveyed to send information to Google or Facebook servers.



Apps related to sensitive personal information such as love, religion, lodging, and health were also included.



[Gohaksu / Seoul National University Law School Professor: (a) situations where users are careful seureopgeona that information to feel the sensitivity is what collectors identify and understand for themselves the real situation hardly yirwojiji]



worldwide through these digital advertising There is also an analysis that annual profits of 227 billion dollars and 254 trillion won are generated.



As the reluctance to collect personal information grew, Apple last month made it impossible to collect personal information without user consent, and Google announced that it will implement a similar policy from the second quarter of next year.



Controversy is growing about the invasion of privacy of app tracking information, and we are not even discussing whether to classify it as personal information yet.



(Video coverage: Kim Seong-il, video editing: Park Ji-in)