Your ideas, although possible in theory, seem to come from the conspiracy domain, but anyway.
Your use-cases are far more easily archiveable the other way round:
Get genetic fingerprint via blood sample and put the information in a database.
So taking this effort to tag people, with much less metadata makes no sense to me.
Even if you wanted to tag people for some weird reason, just assign them a unique identifier once, instead of vaccinating them repeatedly in order to store their entire employment history in their immune system.
Your ideas, although possible in theory, seem to come from the conspiracy domain, but anyway.
Your use-cases are far more easily archiveable the other way round: Get genetic fingerprint via blood sample and put the information in a database. So taking this effort to tag people, with much less metadata makes no sense to me.
Even if you wanted to tag people for some weird reason, just assign them a unique identifier once, instead of vaccinating them repeatedly in order to store their entire employment history in their immune system.