Verance Awarded Patent for Anti-Collusion Technology
The company says that the patented technology involves a new method of protecting "transactional" watermarks. Verance explains that "transactional watermarks permit unique information to be embedded into individual copies of recorded material. These watermarks are potentially subject to collusion attacks, in which multiple recipients combine copies in an attempt to erase or obscure the marks in the combined copy."
The company is claiming that the recently developed method represents a fundamental advance in the security of transactional watermarking technology. Verance's Joseph Winograd states that "as we continue to make advancements in the applications of watermarking technology, it is imperative that we continue to develop new methods for protecting the integrity of watermarks. With this new patent, we make an important breakthrough in watermark security."