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The COVID19 App
So you& #39;ve probably all heard about the new COVID app from the Canadian federal government. I was surprised initially that they were doing it given some of the concerns people have had about the UK& #39;s approach and other countries.
So you& #39;ve probably all heard about the new COVID app from the Canadian federal government. I was surprised initially that they were doing it given some of the concerns people have had about the UK& #39;s approach and other countries.
But I took a deeper look and its really quite a clever approach they& #39;ve taken to give you some useful protection and maintain privacy.
The main idea of the app is to use Bluetooth connections to anonymously link with nearby phones with the app installed.
The main idea of the app is to use Bluetooth connections to anonymously link with nearby phones with the app installed.
Since Bluetooth is shortrange, if you are in Bluetooth range you may be in COVID range. It also looks at the signal to figure out if you are within 2m of another phone. If you are, then your phone swaps random codes, generated right then, like random numbers for the lottery.
The numbers don& #39;t tell the other phones who you are, but your phone keeps track of the numbers it shared and received for two weeks.
Then, and this is the clever part, if someone tests positive, they can log on to the provincial gov& #39;t site and get another random one-time-code.
Then, and this is the clever part, if someone tests positive, they can log on to the provincial gov& #39;t site and get another random one-time-code.
This is like the two-factor authentication codes you get from gmail and other websites. You type that code into your app and this confirms officially to your phone& #39;s app that you tested positive.
