We also agree with reviewers that it's an ideal situation to use built-in services only when needed and turn them off when not needed. Therefore, in Korea, it is legally required to be used only when necessary. Ministry of Land, Infrastructure and Transport(Korea): “…… But the scope of data collected will be kept to minimum and a due procedure should be followed in acquiring the data. First, an epidemiological surveyor should decide whether additional collection of personal information is needed. If the answer is yes, the official should seek approval from relevant authorities to get access to the data. For example, as for the location information, separate permission from the National Police Agency is required.” Source: http://www.molit.go.kr/english/USR/BORD0201/m_28286/DTL.jsp?id=eng_mltm_new&mode=view&idx=2931 3) Key missing components/literatures: We rechecked the paper related to “Key missing components/literatures”.
Table 4 presents smart city projects of several different countries.