PUBLIC SERVICE ANNOUNCEMENT
Help Slow the Spread of COVID-19
Get your local health authority’s COVID-19 Exposure Notification app.
There has never been a more important moment to work together to help solve one of the world’s most pressing problems—the spread of COVID-19.
For centuries, tracing the contact among potentially affected individuals has been one of the methodologies public health authorities have used to try to slow the transmission of infectious diseases. This has traditionally been a very labor-intensive, manual process.
Now public health authorities are turning to mobile phone technology to help improve and automate the most difficult aspects of contact tracing.
Exposure Notification technology assists public health authorities in their efforts to notify people of possible COVID-19 exposure in a way that’s more reliable, efficient, and private.
The apps below integrate this technology.
Residents of the following states can turn on this technology without having to download an app by going to Settings > Exposure Notifications. This feature is available on iPhone only. iOS 12.5 or later required.
Residents of the states below can use this technology by downloading the Exposure Notification app for their state. An app may not be available in your area; additional states’ apps will be added to this list as they become available. iOS 13.5 or later required.
Help stop COVID-19 in Alabama.
Help stop COVID-19 in Arizona
COVID Alert DE
COVID Alert DE Delaware DPH
Guam Covid Alert
COVID19 Exposure Notifications
MI COVID Alert
Help protect your community
COVID19 Exposure Notifications
COVID Alert NJ
New Jersey DOH
COVID Alert NY
Stop COVID Spread in NY
NC Exposure Notification App
North Dakota and Wyoming
COVID Alert Pennsylvania
Virginia Exposure Notification
How does the technology work?
Once you’ve turned on Exposure Notifications, your iPhone will regularly broadcast a series of random numbers, via Bluetooth, that frequently change and are not tied to your identity.
Your iPhone will also listen for random numbers sent by other iPhones (and Android smartphones) that have the app installed, and securely store them.
At least once a day, the system will download keys for the random numbers that have been verified by public health authorities as belonging to people confirmed to be positive for COVID-19.
Should there be a match between the numbers stored on your iPhone and the downloaded list, public health authorities will determine if you have been exposed and whether to notify you with advice on next steps.
Is my information secure?
Only government public health authorities have access to the technology that enables exposure notifications, and their apps must meet specific criteria around privacy and security.
To further protect your privacy and prevent tracking, the random numbers you broadcast change every 10 to 20 minutes. The system is designed so neither Apple nor Google has access to information related to any specific individual.
What does iOS or the app do if I test positive for COVID-19?
If at some point you are diagnosed with COVID-19, you can choose to report that. With your consent, your randomized numbers will be shared with public health authorities so that they may notify other users with whom you have been in contact over the previous 14 days.
Can I turn off Exposure Notifications?
Yes. You can disable this technology at any time by turning it off in Settings. Go to Settings and search for “Exposure Notifications.”