Virginia has launched the first contact tracing app for the coronavirus in the US that uses new technology from Apple Inc and Alphabet Inc’s Google.

The state is betting that the app, COVIDWISE, can help it catch new cases faster, though long delays in getting test results must be overcome in order for it to be effective.

Phones with the app exchange Bluetooth signals to keep an anonymous list of close encounters. The app then allows people who catch the virus to notify those contacts without anyone revealing their identity.

Aljazeera

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