Contact-tracing app faces big technological problems in urban environments, studies say
Studies out of Trinity College Dublin in Ireland suggest 'there is essentially no correlation between received signal strength and distance' of two phones.
Canada's Chief Public Health Officer Theresa Tam speaks with reporters at a media availability in West Block to update Canadians about the most recent modelling for the ongoing COVID-19 pandemic on Aug. 14, 2020. PHAC, which Dr. Tam heads, is able to amend parts of the exposure notification app without Google and Apple. The Hill Times photograph by Andrew Meade