![]() ![]() But digital exposure notification systems have a big advantage: They can be used by millions of people and rapidly warn those who have been exposed to quarantine themselves. Exposure notification schemes like the Apple-Google system aren’t true contact tracing systems because they don’t allow public health authorities to identify people who have been exposed to infected individuals. Recently, a study found that contact tracing can be effective in containing diseases such as COVID-19 if large parts of the population participate. ![]() ![]() Several other exposure notification projects, including PACT, BlueTrace and the Covid Watch project, take a similar privacy-protecting approach to Apple’s and Google’s initiative. Many of them also report the identities of the exposed people to public health authorities, which has raised privacy concerns. All of the apps and services are voluntary however, the island of Maui in Hawaii now requires visitors to use one.ĭozens of apps are being used around the world that alert people if they’ve been exposed to a person who has tested positive for COVID-19. The system uses the ubiquitous Bluetooth short-range wireless communication technology.Īs of January, 20 states and the District of Columbia are using the system for exposure notification apps and app-less services. The services use the coronavirus exposure notification system built jointly byĪpple and Google for their smartphone operating systems, iOS and Android, which the companies updated to work without apps. This means iPhone users in those states won’t need to install exposure notification apps and can instead turn on notifications in the phone’s settings. Virginia has enabled app-less COVID-19 exposure notification services for iPhone users, joining California, Colorado, Connecticut, Hawaii, Maryland, Minnesota, Nevada, Washington, Wisconsin and the District of Columbia. ![]()
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