Some new information to add for SC calls in AB. My girlfriend spoke to a Service Canada agent when SC called my gf for some other passport related service. SC agent was friendly and my gf asked her regarding the Biometrics in Alberta. The SC agent replied that currently they are receiving updated lists from IRCC regularly, and they are calling based on the "postal codes" in the list for candidates here in Alberta. This is a recent confirmed update. Current trend appears to be the
postal codes. That would explain some randomness in calls. Let's see how it goes... Please share if you guys found some other info. At the end, we all that are waiting will be called just a matter of time