Isn it an invasion of privacy to put biometrics such as thumbprint scans onto ID cards?
Driver’s licenses and ID cards already contain biometrics: your height, your weight, your eye color, your hair color, your age, and your photograph. Unlike thumb or eye scans on chips (which are encrypted), anyone who sees your card can see your biometrics. Adding encrypted data simply makes it harder to falsify your identity. Furthermore, additional information stored on smart cards (e.g., electronic cash functionality) could be read only when the owner of the card authorizes it.