Although consumer adoption of RDC is growing, a pitched legal battle between USAA and San Diego-based Mitek Systems Inc., the leading vendor of mobile RDC software (box, page 52), over allegations of patent-infringement and related claims represents a potential dark cloud. Mitek, which holds key patents for the technology and whose software is used by 408 financial institutions, fired the latest salvo in July through a motion in U.S. District Court in Wilmington, Del., that amends a patent suit Mitek filed in April. The new motion adds allegations of defamation and unfair practices against USAA for alleged failure to produce evidence that Mitek stole trade secrets. The skirmish broke out in March when USAA sued Mitek in U.S. District Court in San Antonio alleging fraud, breach of contract, and unjust enrichment, as well as theft of trade secrets.