> In 2001 Wired had an article about a company making a pen that could read microdots on paper while you are writing. It would then be able to uniquely identify

> In 2001 Wired had an article about a company making a pen that could read microdots on paper while you are writing. It would then be able to uniquely identify the paper that you wrote on and correlate what you wrote with, for example, the form you wrote it on. /me know that some laser printers use same type of steganography