Collection item*  Purpose and use  Advantages  Limitations  Related branch and institution
History of using medical facilities  (Purpose) Identify the clinical symptoms and date of initial onset of symptoms of the patient Obtain medical records and evaluate the date of onset of symptoms  Obtain objective data about the clinical symptoms of the patient
Specify medical facilities that were visited during the time of exposure  Long time needed to review the medical records
If there are no related symptoms because the medical facilities were visited for a different illness, it is impossible to obtain related information  National Health Insurance Corporation Health Insurance Review and Assessment Service
GPS (cell phone location)  (Purpose) Identify the route of the patient Verify the consistency of the patient claims
Additionally check the previous route
Use phone GPS (latitude and longitude) data  Evaluate the consistency of the patient route identified via interview
Obtain additional information about the route that the patient does not remember  There are limitations to specify accurate location information because mobile phone locations are used
Errors if the name on the phone and location of purchase (overseas) are different
Long time needed to view the information if there is a large difference between the time of patient confirmation and date of symptom onset  National Police Agency
Card transaction log  (Purpose) Identify the route of the patient Verify the consistency with the patient claims
Specify a location for defense against infectious diseases  Specify the visited location, and use it to select the scope of contact investigation
Monitor detailed route within a location  If a card with the patient’s name is not used, the transactions of another person are mixed and need reclassification  Financial Services Commission
CCTV  (Purpose) Identify the route of the patient Identify patient’s clinical symptoms
Evaluate the exposure risks of contacts  Check whether the patient was wearing protective gear (e.g., mask) and the patient’s clinical condition at the corresponding location
Help evaluate the risk of exposure if there is a large unspecified number of contacts  Long time needed to check the CCTV
There are limitations to clearly identify if there is no internal CCTV or blind spots are present  National Police Agency