Smartphone and satellite network coverage contributes to a number of useful applications that increase the comfort of everyday people's lives. Using the Global Positioning System (GPS) provided by the satellite, people can be tracked in real time at a specific location. When it comes to infectious diseases such as COVID-19, the most important measure to reduce its spread is to contain it. Quarantine is usually a solution and any tracking system can be employed to specify the location of the infected people. However, as quarantined areas are scattered around the world, it is difficult to accurately trace the boundaries within accommodation. A geo-fenced GPS system, which has adopted an efficient border protection system, is proposed for quarantine and monitoring purposes of COVID-19 carriers. The system is introduced as an application to implement a home/local quarantine policy using bracelets that fit the boundaries of smartphones. From the experimental results obtained, it is observed that the proposed system achieves an effective and high accuracy performance in various location conditions.