COVID Alert app: Spread the word

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Organization: Public Health Agency of Canada

Date published: 2020-04-12

As trusted frontline workers, you have an important role to play in promoting COVID Alert. This public health tool can help limit the spread of COVID-19 and relieve stress on Canada’s health care system.

How public health workers can help

Download the app

Get to know how it works. The app can be turned off when wearing personal protective equipment.

Recommend the app

Mention the app and encourage others to download it.

Provide one-time keys

When confirming positive test results, provide a one-time key and advise people to enter it into the app.

Follow up

Mention the app in every follow-up call and remind people to enter their one-time key.

Explaining how the app works

The app uses Bluetooth signals to exchange random codes with nearby phones that have the app.

If someone you’ve come in closeFootnote 1 contact with later tests positive for COVID-19, they will receive a one-time key from their local health authority that they can enter into the app.

You and others who have spent time nearFootnote 1 this person will then be notified through the app that you may have been exposed.

If someone tests positive

They will receive a one-time key, through their local public health unit.

Information on how to access a one-time key, can also be found within the app by clicking “Get a one-time key”.

Once the one-time key is entered into the app, other users who have been closeFootnote 1 to them will be anonymously notified that they may have been exposed.

User privacy is protected

COVID Alert does not have access to a user’s location, name or address, or their health information.

Find out more at


Footnote 1

For more than 15 minutes, less than 2 metres apart, in the last 14 days.

Return to footnote 1 referrer

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