Yesterday, decentralized Internet of Things (IoT) startup Nodle.io launched Coalition, a contact tracing application to contain the spread of COVID-19. The company says the app preserves user privacy.
Coalition will use Nodle’s Bluetooth Low Energy-powered network to communicate with nearby devices. Once a user downloads the app and turns on Bluetooth, the app will record anonymous encounters with other Coalition users nearby. For privacy, these encounters are stored locally on the phone.
The application generates a random anonymous ID of the user’s identity using an open protocol called Coalition Whisper Tracing. If a user declares that they are sick, the anonymous IDs from the phone are sent to the cloud. The app on another user’s phone then downloads these ‘infected’ IDs and compares it with the IDs stored locally. Other users are notified if they came in contact with an infected person.
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