Signal Advance secures second patent for Analog Guard platform to resist AI and quantum threats.

Signal Advance Inc. (OTC:SIGL) secured a second major patent for its Analog Guard® platform, utilizing a cascaded-circuit encryption architecture that operates at the physical layer to resist AI and quantum computing threats. The fast-tracked patent, set to issue in April 2026, enhances the company's intellectual property position to support global commercialization and licensing.