Many countries have introduced contact tracing by using various tools. Security footage, GPS, and bank card records are directly extracted from smartphones that share real-time data about people’s timelines. In countries like South Korea and China, text messages are automatically triggered, informing them about new COVID-19 confirmed cases. Moreover, the text alerts also notify people to report to testing centres if they have been close to the victims. Thus, contact tracing has massively helped South Korea gain control over the rising cases and currently has the lowest per-capita mortality rate worldwide. Singapore has launched an application that uses short-distance Bluetooth signals to detect people in close proximity. The app records all these details for 21 days to detect COVID-19 symptoms.