חומר רקע

•Apple/Google Exposure Notification • • •Avi Bar, Google •November 16, 2020 Exposure Notifications (ENs) are alerts that people can receive on their phones to let them know they’ve been exposed to someone diagnosed with COVID-19. • Supporting role: Meant to augment public health’s contact tracing efforts, not replace them • Privacy preserving: Built on non-identifiable Bluetooth signals that indicate proximity and protect people’s privacy (no GPS or location data) • Configurable: Public health authorities can control risk factor, criteria, messages etc. What are Apple/Google Exposure Notifications? Why are Apple and Google getting involved? ●Traditional contact tracing techniques have some challenges: ■Resourcing ■Speed ■Completeness ●This cross-platform cooperation allows the system to work smoothly across Android and Apple devices Alice and Bob don’t know each other, but have a lengthy conversation sitting a few feet apart. Their phones exchange non-identifiable bluetooth beacons, which change frequently. Bob is positively diagnosed for COVID-19 and enters the test result in an app from his public health authority. With Bob’s consent, his phone uploads the last 14 days of his bluetooth keys to the server. Key Key 15 min 15 min A few days later… App Positive Test Submit ~14 day temporary store Apps can only get more information via user consent Alice receives a notification on her phone. Alice continues her day unaware she had been near a potentially contagious person. Alice’s phone periodically downloads the non-identifiable bluetooth keys of everyone who has tested positive for COVID-19 in her region. A match is found with Bob’s non-identifiable beacons. The notification includes information about what to do next (e.g. to quarantine, monitor symptoms, get tested, call public health). Non-identifiable bluetooth keys are downloaded periodically A match is found ALERT: You have recently come in contact with someone who has tested positive for Covid-19 Tap for more information --> Sometime later… Additional information is provided by the public health authority app •Thank you • •November 16, 2020