I don't think it's as far as a stretch as you believe. The DOD already issues CAC cards which includes: * A private cryptography key. (Something you have) * W

I don't think it's as far as a stretch as you believe. The DOD already issues CAC cards which includes: * A private cryptography key. (Something you have) * Which is PIN protected. (Something you know) * With a photo on the front. (Something you are) Of course, photo identification can't be easily replicated remotely. So remote use maybe only gives you two of the three. Upside is that there's already existent card readers, along with all the infrastructure required to manage the cards and keys.