id author title date pages extension mime words sentences flesch summary cache txt cord-269850-5pidolqb Maghdid, Halgurd S. A Smartphone Enabled Approach to Manage COVID-19 Lockdown and Economic Crisis 2020-08-14 .txt text/plain 5046 274 57 1. We build a tracking model based on positional information of registered users to conduct contact-tracing of confirmed COVID-19 cases. The best thing to do seems to be let people go out for their business, but any body tests positive of COVID-19, we would be able, through proposed framework, to trace Fig. 3 A framework of contact-tracing using smartphone-based approach everybody in contact with the confirmed case and managing the lockdown and mass quarantine. In this study, k-means as an unsupervised machine learning algorithm is used to cluster the users' positions information and predict that the area should be locked down or not based on the same empirical thresholds. This Fig. 6 The results of the prediction model for both scenarios is followed by send back notifications from the server to the users to notify them for the crowded area and controlling the spreading the coronavirus COVID-19. ./cache/cord-269850-5pidolqb.txt ./txt/cord-269850-5pidolqb.txt