Eh ?
> In 2021 Aadhaar was even trialed for real-time identification of Indians as they waited in queues for COVID-19 jabs .
"Trialed" ? It's not in trial mode, it's been in production use since last spring - you can just go over to dashboard.cowin.gov.in and see all the 1.7 billion+ vaccinations registered to Aadhaar IDs plus rich analytics around near-live vaccination counts, daily totals, breakdown by type, age group, vaccine type and more.
It's also how everyone gets their digital certificates - one uses their Aadhaar linked phone and gets the QR code and copy of vaccination record.
Aadhaar isn't just an ID. It's an entire digital ecosystem.