When necessary, the officers were permitted to draw on four major types of information in addition to patient and doctor interviews:

- Facility visits, including pharmacies and medical facilities
- Cellular GPS data from cell phones
- Credit card transaction logs
- Closed-circuit television

The South Korean Government also developed apps that collected relevant data, which eased the burden on EIS officers and made it possible for them to cope with the high volume of investigations.

Ways that South Korea has proceeded Contact Tracing Using Big Data

Wayne State University

Smith College

Big data is a field that analyze data sets that are too large or complex to be dealt with by traditional data-processing application software or manpower. In the pandemic of Covid-19, many countries have turned to this field to minimize the impact of the pandemic by analyzing and evaluating the possibility of certain people to be infected. Hospitals and care facilities can then be alerted beforehand, and the likelihood of an undetected outbreak is reduced.

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