Absolutely.
I'm sorry.
The COVID Alert app was a tool to help Canadians monitor any potential contact or exposure that they had. It supplemented the contact tracing that provinces, territories and local public health had put in place.
The way the app worked was that one-time keys were generated when people tested positive through a PCR test. Those who had downloaded the app and who had been in proximity to those individuals received notification that they could have been exposed.