Canon Blocks Copy Jobs Using Banned Keywords
aesoteric notes that a future version of Canon's document management system will include the exciting breakthrough technology that will OCR your printed and scanned documents, and
prevent distribution of keywords. Documents containing the offending words can be sent to the administrator, without actually telling the user just what word tripped the alarm. The article notes that simply using 1337 for example will get around it.
If you want to block copying of some documents, you can simply watermark them with the anti counterfeiting constellation. Use something that will print the constellation and print up a ream of paper. Use the anti copy paper for the documents you don't want copied.
Print this in yellow ink in the background.
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The truth shall set you free!