Mass DPH rolls out MassNotify automated exposure notification smartphone app

Sanyatti

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Mass DPH rolls out MassNotify automated exposure notification smartphone app


MassNotify is currently in a pilot phase. The full functionality is available for a limited number of users in Massachusetts.**

MassNotify is the official COVID-19 automated exposure notification system for Massachusetts, powered by technology developed by Apple and Google. By enabling this service, you can be quickly notified if you’ve likely been exposed to the virus by another MassNotify user, allowing you to reduce risk for your loved ones, seek medical attention, and slow the spread in your community.

Using this service is 100% voluntary, you can opt out at any time, and the process is privacy-focused. No GPS or location information from your phone will ever be collected or used by MassNotify.

By opting in, your phone will share anonymous codes with other MassNotify users using your phone’s Bluetooth. If another user you’ve been near tests positive for COVID-19 within a 14-day period, your phone may notify you.

If you’ve opted in to MassNotify, and then you test positive, you can choose to easily and anonymously notify others to help stop the spread of COVID-19.

For more information on how MassNotify works, and its privacy protections, see the MassNotify privacy policy at mass.gov/massnotify/privacypolicy

[The site](https://www.mass.gov/massnotify) currently says "MassNotify is currently in a pilot phase. The full functionality is available for a limited number of users in Massachusetts."

This is based on the Google-Apple [Exposure Notification Framework](https://en.wikipedia.org/wiki/Exposure_Notification). Many other cities, states, and countries have deployed their own versions.

I'd like to know what the DPH set for exposure parameters. Per [Google's FAQ](https://www.google.com/covid19/exposurenotifications/pdfs/Exposure-Notification-FAQ-v1.2.pdf),

>The public health authority sets parameters to determine if someone has been exposed. For example, by defining the risk parameters based on estimated time the user has been in contact with someone who has been diagnosed as positive for COVID-19 and the approximate distance between the users. Public health authorities will set a minimum threshold for time spent together.
>
>To approximate distance, the system compares the Bluetooth signal strength between the two devices in contact. The closer the devices are, the higher the signal strength recorded. This signal strength can vary significantly based on factors like how the device is being held and as such this only provides an estimate https://www.mass.gov/massnotify
 

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