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To: xcr600 who wrote (35899)1/15/2002 12:51:42 PM
From: dlu  Read Replies (1) | Respond to of 69375
 
Sorry don't know of any off-hand, but if you are interested in this area you might also find DMRC <Digimarc> interesting:

Digimarc Corporation is a provider of patented digital watermarking technologies that allow an imperceptible digital code to be embedded in the printed or digital versions of media content, such as commercial and consumer photographs, movies, music, magazine advertisements, catalogs, product packages, and valuable documents, including financial instruments, passports and event tickets. The Company's products are grouped along three lines of business: Secure Documents, Media Commerce and Digimarc MediaBridge. Each product line offers systems generally including embedder software, which is used to place Digimarc's digital watermarks into content, and reader technology, which is incorporated into digital devices to detect, read and respond to the embedded code.

Don't currently own any but have had several successful trades in the past. Interesting company.

dlu