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Jeju Self-Governing Province has shown limitations in understanding the activities of A Chinese tourist and finding contacts. The government urged the use of cell phone access data to quickly identify and respond to the path of infected patients.

This is reporter Kim Yeon-sun.

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The Jeju autonomous province had a hard time figuring out the route of Chinese A, who was confirmed as having confirmed the new coronavirus.

Because he relied solely on A's daughter's statement and CCTV analysis.

It was later confirmed that A visited another pharmacy in downtown Jeju.

I also went to restaurants and coffee shops, but I can't figure out the exact location.

I went through two duty free shops, but I can't figure out which store I went to.

It is because of the limitation that A's passport information cannot be disclosed.

[Jeju self-government official: such parts are the most basic because they should not be violated when providing personal information.]

Since Mr. A's specific movement path cannot be determined, there is a limit to finding a subject who may have been in direct or indirect contact.

Jeju Self-Governing Province requested the use of private big data to quickly identify the path of patients' movements in the event of similar cases.

Let's use your carrier's cell phone access data to identify who's presenting and who's at risk.

This is a way to tell people at risk that they are exposed and to voluntarily provide symptoms.

Like A, the Chinese, foreigners can be included in the management to analyze roaming data to identify the contact.

[Won Hee-ryong / Jeju self-governing governor: If the efficiency of the work from confirming the movement of confirmed patient movements and expanding the scope of contact surveys can be efficiently utilized by private big data, the scope of management can be greatly expanded even now.]

Although the Jeju Self-Governing Province has proposed a scientific anti-blocking alternative that utilizes private big data, some point out that it is a countermeasure against the North.