I installed and setup Health Canada's COVID Alert app this morning.

It's really simple to do that. You don't enter any personal information. You just select which province you're in, agree to let it use your Bluetooth, and give it permission to share the random codes that you collect with its servers (more on this below). The app is then active and working. But to be clear, it doesn't collect your location (it doesn't use GPS or location services). It doesn't collect the places or times that you are next to someone who also has the COVID Alert app. And it doesn't know if you're with someone who was previously diagnosed with COVID-19.

Built on top of the private exposure framework that was collectively developed by Apple and Google, the app works by using Bluetooth to exchange "random codes" between nearby phones that have the app. These are anonymous and random codes that are used to track which phones have been next to which phones for any meaningful period of time. The app also uses Bluetooth signal strength to estimate proximity. So it knows how long your phone has been proximate to someone else's (with the app) and how close they got to each other.

That's pretty much all that happens with the app unless you test positive for COVID-19. At that point, you will be given a one-time key along with your diagnosis. The onus is then on you to anonymously self-report on the app. Once you do that, anyone who was exposed -- i.e. next to your phone in the last 14 days -- will receive an alert on their phone via the app. And since the app doesn't know any names or who anybody is, it's of course all completely anonymous.

It's great to see all of this coming together. The private sector worked to build the underlying framework and now you have government building on top of it to deliver public health tools. I know that some or many of you will be concerned about privacy, but that appears to have been very well thought out. If you haven't already downloaded the app, I would encourage you to check it out. It's available for iOS and Android and can be downloaded over here.

Venture capitalist Albert Wenger wrote on his blog today that the road back from COVID-19 could start -- as early as May -- provided we're able to get our act together around three essential things: masks, tests, and tracing for everyone. We have all been talking about the importance of these things over the last few weeks, but I think it's worth mentioning just how quickly some of this is starting to happen.

Both Apple and Google have announced that they are building a voluntary contact-tracing network. By May, they hope to release a set of APIs that other software developers will be able to build on top of. Bluetooth will be what is used to detect when humans are in close proximity to each other. Eventually, both companies plan to integrate contact tracing right into their operating systems.

Here's how it might work:

Of course, we are also seeing new startups emerge, like this one here called Coronatrace.

Similar to what Apple and Google have in mind, the app will be a voluntary contact-tracing network. By using it, your phone will begin to log how you move about, something that is already happening today with many of the apps we already use. Should someone test positive for COVID-19 (they would need to update their health status within the app), it would then immediately notify the network and anyone who might have crossed paths with them.

Obviously it would be far better to simply have a vaccine. But the experts are saying that will take some time -- 12 to 18 months? And in the interim, we're going to need to get the global economy back up and running. Seeing solutions like these being developed makes me hopeful we'll be able to do that sooner rather than later.

I installed and setup Health Canada's COVID Alert app this morning.

It's really simple to do that. You don't enter any personal information. You just select which province you're in, agree to let it use your Bluetooth, and give it permission to share the random codes that you collect with its servers (more on this below). The app is then active and working. But to be clear, it doesn't collect your location (it doesn't use GPS or location services). It doesn't collect the places or times that you are next to someone who also has the COVID Alert app. And it doesn't know if you're with someone who was previously diagnosed with COVID-19.

Built on top of the private exposure framework that was collectively developed by Apple and Google, the app works by using Bluetooth to exchange "random codes" between nearby phones that have the app. These are anonymous and random codes that are used to track which phones have been next to which phones for any meaningful period of time. The app also uses Bluetooth signal strength to estimate proximity. So it knows how long your phone has been proximate to someone else's (with the app) and how close they got to each other.

That's pretty much all that happens with the app unless you test positive for COVID-19. At that point, you will be given a one-time key along with your diagnosis. The onus is then on you to anonymously self-report on the app. Once you do that, anyone who was exposed -- i.e. next to your phone in the last 14 days -- will receive an alert on their phone via the app. And since the app doesn't know any names or who anybody is, it's of course all completely anonymous.

It's great to see all of this coming together. The private sector worked to build the underlying framework and now you have government building on top of it to deliver public health tools. I know that some or many of you will be concerned about privacy, but that appears to have been very well thought out. If you haven't already downloaded the app, I would encourage you to check it out. It's available for iOS and Android and can be downloaded over here.

Venture capitalist Albert Wenger wrote on his blog today that the road back from COVID-19 could start -- as early as May -- provided we're able to get our act together around three essential things: masks, tests, and tracing for everyone. We have all been talking about the importance of these things over the last few weeks, but I think it's worth mentioning just how quickly some of this is starting to happen.

Both Apple and Google have announced that they are building a voluntary contact-tracing network. By May, they hope to release a set of APIs that other software developers will be able to build on top of. Bluetooth will be what is used to detect when humans are in close proximity to each other. Eventually, both companies plan to integrate contact tracing right into their operating systems.

Here's how it might work:

Of course, we are also seeing new startups emerge, like this one here called Coronatrace.

Similar to what Apple and Google have in mind, the app will be a voluntary contact-tracing network. By using it, your phone will begin to log how you move about, something that is already happening today with many of the apps we already use. Should someone test positive for COVID-19 (they would need to update their health status within the app), it would then immediately notify the network and anyone who might have crossed paths with them.

Obviously it would be far better to simply have a vaccine. But the experts are saying that will take some time -- 12 to 18 months? And in the interim, we're going to need to get the global economy back up and running. Seeing solutions like these being developed makes me hopeful we'll be able to do that sooner rather than later.