This keeps coming up on my blog. I for one am exited to watch the progress to the end of days.
You are going to need your ID to ship a package. It is just one more step to get people used to presenting their papers for inspection at every point of contact. They will trickle these requirements in one at a time over a long period of time. It will all be in the name of saving lives, never mind that fleas cause more deaths than terrorism.
People are bound to get sick of digging in their pocket or purse for ID every five minutes so why not use some sort of pendant or badge to make things more convenient? You don't even have to know you are being scanned as you walk down the street. It is so convenient, you don't even know who is canning you. If you don't have the device exposed, no worries. You can just step in to the pervasive body scanner or give blood to run you genome through the database to verify on the spot. "Crime? No crime has been committed. We just want to make sure you are who you say you are for your own safety. This way, we know you are not a terrorist and we won't gun you down while reaching for your papers to get through the checkpoint."? How convenient.
When it gets to the point you need to present ID to buy food, that is the mark of the beast to a lot of people. Not sure how that is going to go down with the whole freedom of movement idea.