In my province, vaccines are currently being distributed based on:
- working in certain positions in health care and
- age
For workers, appointments are arranged by their employer, who is responsible for verifying eligibility. For eligibility based on age, proof is required.
They originally thought of doing something more elaborate, but it gets really complicated, both for verification and because of groups lobbying to have their members "moved up" the queue. Sometimes simpler is better.
Though when the phone lines opened today for appointments based on age, they received 1.7 million calls in 3 hours though there are only about 85,000 people eligible at this time. There is no explanation of whether the extra calls were from ineligible people or were "busy signal" calls from eligible ones.