This could be a useful variation on a trick for tracking leakage of documents: distribute N paper "copies" of a document to a pool of suspected leakers, each "c

This could be a useful variation on a trick for tracking leakage of documents: distribute N paper "copies" of a document to a pool of suspected leakers, each "copy" with tracking data embedded, and when leaks occur, match the tracking data to the leaker. Old way: use apparent typos to track, this way: use font variations, next way: use variations in kerning between words.