We fully agree with the reviewer's comment that integration between services is difficult not only in smart cities but also in other fields. As advised by the reviewer, the situation in Korea was described in Figure 5 (Outbreak of COVID-19 in Korea and the limitations of smart city services) and Table 10 (Limitations of smart city services in each phase). The spread of COVID cannot simply be blocked by smart city services, but by simplifying the current state and proceeding with the thesis, we did not reflect Korea's medical stage with geographic characteristics. We will conduct additional research in the future to fully reflect the reviewer's comments. Thanks for the advice.
I stand by my position that the feasibility/ethical aspects should be discussed, at least from a social acceptance or a legal point of view, as the reader is left skeptical about whether it can actually be done with the current explanations.