A digital watermark technology that uses artificial intelligence to detect forgeries has been developed at the University of South Australia. The intelligent watermarking technique gives owners copyright protection on images and data used in internet and other applications.

Knowledge-based intelligent engineering systems centre director Lakhmi Jain said the system used intelligent algorithms to prevent watermark security being cracked.
Professor Jain said original material could be identified by embedding a digital watermark, such as a logo, and attaching a user key.

The hidden watermark could only be extracted by a user with the correct key, similar to a valid PIN.

Only the key owner, whose identity was securely embedded, could reveal and use the original image or document and verify its authenticity.

More here.