The effectiveness of Canada's COVID Alert app depends on how many users it has, and after just three days, it looks like people are getting on board.\n\n\nEditor's Choice: This 1.6 km Canadian Rocky Mountain Canyon Hike Is Hiding The Bluest Waters Ever\n\n\nSince its launch on July 31, the app, which has been designed to inform people if they have been near someone who has tested positive for COVID-19, has been downloaded over a million times, according to an August 3 tweet from Canadian Digital Service.\n\n1.1 Million\nCOVID Alert App Downloads\n\nThe app works using Bluetooth connections to other phones. When someone receives a positive test for the virus, they enter a daily random code, which is then shared with other nearby devices. \nIf you have COVID Alert downloaded and have been close to someone who also uses it and tested positive, you will be notified. \nCurrently, the app is only active in Ontario, but Canadians in other provinces can download it. They will be told when they can start sharing information in their area.