Mitomo, Hitoshi; Otsuka, Tokio; Kamplean, Artima - 2022
This paper aims to analyze how the prevalence of COVID-19 infection has affected the adoption of the contact …-confirming application in Japan and how network externalities have emerged in the diffusion process. Japan's COVID-19 contact …-confirming application (COCOA), launched on June 19, 2020, was expected to be a digital platform to work against COVID-19 by notifying users …