LyrArc Article Gist
The use of apps and tech based solutions have been largely ineffective in doing effective contact tracing and testing to isolate people with coronavirus. Epidemiologists question its effectiveness when it does not lead to people isolating themselves to prevent spread. 

A major problem is lack of confidence in the tech based solutions. 27 states in the U.S. have no apps or are not developing one.  Apps do not use the entire set of tech resources available because of dilution from concerns about privacy. Another major problem is that there is no national approach. California, Washington and Oregon have a pilot program on the Google-Apple system, Delaware and Pennsylvania launched an app in September from Irish developer NearForm. New York and New Jersey started with a NearForm app in October. States using apps are doing this without much conviction that this is a tool that will work to do effective contact tracing and testing to isolate infected persons. For this reason one sees pilots and launches this late in the coronavirus pandemic. Early efforts stumbled. 

The UK and French apps also proved ineffective. Germany opted for low tech solution that proved surprisingly effective in the first wave of the coronavirus. Germany relied on teams from state employees which used a national database, personal computers and phones to call individuals who needed to be isolated and tracked. Asian countries have less concern for privacy leading to apps being more effective. Even here low tech solutions with national database and teams of people with personal computers and phones calling and making personal contact including visiting homes has worked better than apps. Human relations skills to reassure people affected by coronavirus, legwork to contact personally at homes and check up, and persuasion to have people isolate have been more effective than app based impersonal tech solutions.