Departure checklist:

" The dependency on my driver's license, in particular, has become a growing concern. I have no backup for this document and, given the quaintly intermittent schedule of DMV offices, no quick way to replace it. You might think that when credentials do finally go digital, they'll be easier to replace. But in fact, identify providers will (or should) still require a face-to-face ceremony. This doesn't get any easier until, perhaps, we start asserting our identities using nature's digital signature -- our DNA."

(Via Jon's Radio.)