The pandemic of COVID-19 had not only been testing the existing health care system globally, but also highlighting the need for more innovative and adaptive methods in dealing with new health threats. Digital technology become one of the most effective and efficient strategies in terms of controlling and monitoring the outbreak of this disease. These digital strategies will serve a significant role in providing valuable insights in disease and virus control for any upcoming event. This paper aims to discuss and evaluate the roles of digital technology methods in addressing COVID-19 pandemic, while focusing primarily on two case studies: COVIDSafe App from Australia and the EU’s Digital COVID Certificate. While confronting the challenge raised by COVID-19, the world had invented critical digital tools as instruments to monitor, track, and manage the spread of virus. By taking a deeper look at the history, technology, and application of the successful cases, the author hopes to draw important lessons from these experiences, and foreshadowing some broader potentials for their future development and usage. Additionally, the author also analyzes the legal and privacy concerns that may come with the adaption of digital technology in fighting the pandemic, and underscore the implication of technological methods advancement for future health crisis.