Througout the pandemic, a number of countries have released COVID-19 exposure apps that notify user's when they've been in close contact with a positive case. These apps are an excellent example of public interest technology at work. Canada's COVID exposure app was titled "COVID Alerts", although it is now retired. The app represented a tech-driven solution to a major public health crises. In order for COVID Alerts to be effective, it required the government to collaborate with technologists to create a solution that served the general public.

Canada's COVID-19 Exposure Notification App