That question seems interesting and important, but unforunately it isn't. By creating an industry standard in phones, printers, camera's etc. that registers invisibly and "forever" you are creating a standard that is abusable. And it isn't widely known that your prints, photo's, posts on the internet, the pages you go to on the internet, where your car is, is being recorded and stored.Brian_B said:Question: why would a government want to control it's citizens? Particularly in democracies where the leadership could be voted out every few years. I'll be worried when they start to suspend elections.
What is important here is that we are accepting to be on a path that makes humans traceable without their consent. The argument "I've got nothing to hide, so it's ok" is simply invalid. First of all, you don't know what someone wants to know, so you don't know what you are hiding. Second of all, ever wondered where all the SPAM comes from? How do they know you like dogs, flowers, sudoku's, Civilization, Viagra etc? Sending you SPAM is innocent compared to what can be done by comparing stored information.
Here is an example. I've posted this picture of my 2 nephews, after my brother-in-law took it with a digital camera. A cookie for the person who knows what brand and type of Camera my brother-in-law has.

A "solution" of this is to have printers, camera's, mobile phones and other types of communcation devices that do NOT store, mark, send the information to a central storage facility. Databases that do not store information forever, but max a few hours. Non-personalised credit cards, freedom to buy a trainticket with cash. Search engines that do NOT store individual surf-behaviour by default and store it forever. No matter how often Google says "do no evil", as long as they store the searchstrings one looks for it is in danger of being forced to "do evil".
I, as a CFC - moderator can easily see the IP-addresses you are posting from. I can find (roughly) where you are and who your internet provider is. If I am in law-enforcement; I can get your sign-up information (incuding your billing address) from your provider. So, with just a little effort from law-enforcement; your posts are traceable to you. Post something Anti-American -> Pro-Americans know where you live and who you are. Post something Anti-Iranian -> Pro-Iranians know where you live and who you are. Post something Anto-Chinese -> Pro-Chinese know where you live and who you are.
I know in 2006 in most circumstances it will not be noticed, ignored or be disregarded. Since the data is stored the question that matters is: Do you know if your post will not be noticed, ignored or be disregarded in 2046 ??