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<p>The NHS COVID-19 App already includes several features that are designed to help
identify and manage risk for individuals and communities.</p><p>For contact tracing,
the app detects and logs other nearby app users using random unique identifiers. If
any of those users later test positive for COVID-19, close contacts will receive an
exposure alert with advice to self-isolate.</p><p>When a user first registers for
the app they are asked for the first half of their postcode. They can check the app
every day to see if where they live has become a high-risk area for COVID-19. If it
has, they will also receive a notification. This will help them make daily decisions
to protect themselves and those close to them.</p><p>The app was launched following
positive trials and rigorous testing. It is accurate, responsive and has received
positive feedback from users. We continue to work to optimise the app and will keep
further improvements under review.</p>
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