ROSHARON, TX / ACCESS Newswire / October 20, 2025 / Signal Advance, Inc. (OTC:SIGL), developer of AI-resistant and quantum-secure encryption technology, today announced new simulation results validating the advanced performance of its patented Analog Guard^® cybersecurity platform. The results represent achievement of a major milestone in encryption randomness, scalability, and data integrity, confirming Analog Guard^® as a next-generation foundation for secure hardware and data protection systems.

In controlled simulations, Signal Advance engineers tested multiple Analog Guard^® configurations under rigorous conditions. The encryption engine achieved near-perfect randomness, flawless data recovery, and consistent performance across multi-stage deployments - all within a unified analog-domain architecture.

Key performance metrics included:

• Encryption Bit Error Rate (BER[En]) = 0.5114

• Decryption Bit Error Rate (BER[De]) = 0.0

The Bit Error Rate (BER) quantifies how much an encrypted signal differs from its source. A BER near 0.5 indicates the encrypted output is completely random-mathematically indistinguishable from noise-a hallmark of strong encryption. A BER of 0.0 verifies perfect recovery of the original data upon decryption.

To validate scalability, engineers cascaded two Analog Guard^® encryption stages, feeding the encrypted output of one stage into another. Results remained stable: BER[En1] = 0.5134, BER[En2] = 0.5114, and BER[De] = 0.0, confirming that encryption strength and fidelity are fully preserved even in multi-stage systems.

"Analog Guard^® doesn't just encrypt data-it transforms it into statistically random signals that are impervious to both conventional and AI-based attacks," said Chris Hymel, Ph.D., President & CEO of Signal Advance, Inc. "Equally critical, the system restores data with absolute precision. That dual capability-complete unpredictability plus perfect recovery-defines the next frontier in cybersecurity hardware."

Dr. Hymel added, "These results demonstrate that Analog Guard^® has moved well beyond concept status. It's now a scalable, defensible, and commercially viable platform designed to harden digital systems against evolving AI and quantum threats. This marks a pivotal step toward deployment in cybersecurity, defense, and secure communications markets."

About Signal Advance, Inc.

Signal Advance, Inc. (OTC: SIGL) develops breakthrough 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.

Analog Guard^® and Signal Advance^® are registered trademarks of Signal Advance, Inc. All other trademarks are the property of their respective owners.

Media & Investor Contact

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Forward-Looking Statements

This press release may contain forward-looking statements, including statements regarding technology performance, testing results, and commercialization plans. These statements are based on current assumptions and involve risks and uncertainties that could cause actual results to differ materially, including differences between simulations and hardware performance, evolving analytic methods, and changes in market or regulatory conditions. Signal Advance undertakes no obligation to update forward-looking statements except as required by law.

SOURCE: Signal Advance, Inc.