Before I start trawling the net and piecing together the dribs and drabs of information, does anyone have any useful resources for Guilloché Patterns (and secure printing).
I have a little project that requires a certificate to be printed and the client would like to have it so that the certificate can not be scanned, altered and reprinted. It was a bit of an after thought so there is no money in the budget for a commercial product to do this.
Sorry to tell you I don't... I do how ever want to use that technology for a license plate cover for my car. It would be transparent to the eye, but a camera (say from stop light surveillance cam that catches your plate number if you run a red light) would have it distorted.
actually... would that even work? Like I said I don't have any resources on the matters so I don't know much about them :P