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.
I agree with @cata here.
You also introduce a forced 200ms of latency with batch sending.
I also would propose a proper protocol like RTP for network transport, which helps with handling problems during transport.