Comment by thaumasiotes

> Surely there's a difference between collecting a thumbprint for a driver's license or even collecting full fingerprints for a specific job type, and collecting your DNA and an iris scan just for being a citizen?

Not really; every citizen is expected to have a driver's license, and this takes place before anyone has really thought about the issue even if they're likely to object later. It's sort of like the difference between baptizing infants and baptizing adults.

You're right that there's more information in the DNA, but what difference do you see in the iris scan?