A week after the launch of WA Notify, the Washington Department of Health reported Monday that 1.2 million users have signed up for it by enabling the notifications or downloading the app that uses Bluetooth technology to alert people they may have had close contact with someone who tested positive for COVID-19. Klickitat County Public Health Director Erinn Quinn says the app can help as case numbers make it difficult for health departments to keep up with contact tracing. If a smartphone user does test positive, they can submit their code and others with the app will be notified if they’ve been in contact with someone who is COVID-positive.