The information on the card should be digitally signed; the information on the card should be verifiably untampered. I'm convinced the article itself fails to t

The information on the card should be digitally signed; the information on the card should be verifiably untampered. I'm convinced the article itself fails to take account of how digital signing works. The benefit of keeping signed data on the card is to avoid network lookups; a reader should be able to, for example, decode a jpeg photo of you held on the card and allow a policeman with a hand-held reader to tell that you are who you say you are.