OAKLAND, Calif. Alphabet Inc’s Google said on Friday that 20 U.S. states and territories, representing about 45% of the country’s population, are “exploring” contact tracing apps for the novel coronavirus using a tool it developed with Apple Inc .
Google had previously said in May that three states – Alabama, North Dakota and South Carolina – would be launching apps using the exposure notification tool.
In addition, the company said 16 countries and regions outside the U.S. had launched apps using the Apple-Google tool.
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The technology enables app users to track encounters with other people through Bluetooth signals and anonymously notify contacts if they later become infected with the virus.
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