Signal Advance, Inc. develops technologies in encryption, secure communications, and signal processing. Its flagship Analog Guard platform leverages analog-domain transformations to deliver AI-resistant, quantum-resilient encryption that strengthens digital systems in high-threat environments. The company was formerly known as Biodyne Development Company, Inc and changed its name to Signal Advance, Inc. in 2007. The company was incorporated in 1992 and is based in Rosharon, Texas.