Reference
What source, claim, permission, or human contribution is in force?
Signal Fidelity Group is building an immune system for language — a closed-loop inference control system for the era of AI-mediated communications.
We preserve the meaning of language.
Signal fidelity for humans, organizations, and agentic AI.
Three forms of signal transmission. One solution.
For a century, PR has been about earning the public’s trust by borrowing the credibility of others. Journalists, then radio, then television. Then the internet flattened access to information and the intermediary shifted to peers — bloggers, social media influencers, organic search. Through every era, communications chased the same prize: earned third-party validation.
The trust intermediary is no longer a journalist, an analyst, or a search result. It is an AI inference. Quickly and comprehensively, large language models have become the layer through which messages reach stakeholders — summarized, rewritten, retrieved, and recommended before a human ever sees them.
The trust intermediary used to be a journalist. Then a peer. Then a search result. Now it’s an AI inference.
Briefings, embargoes, key messages, spokesperson training — none of it governs an AI model. AI systems no longer just generate content. They infer, summarize, retrieve, rewrite, route, recommend, and act. The risk is no longer that the output is wrong. The risk is that the output drifts — away from the source, the claim, the permission, the evidence, the audience, or the intent it was supposed to preserve.
That drift creates business risk:
Signal Fidelity Group exists to control that drift.
Communications professionals have always managed how meaning traveled through intermediaries whose internal state we could not fully observe and whose decisions we could only shape indirectly — through careful signal design, node selection, timing, and measurement. We just did not have the vocabulary to describe it as inference control.
Large language models are the first machines built on the same operational principles as the intermediary chains we have always managed. They are non-deterministic, probabilistic, and inference-based. The discipline that has governed corporate communication for a century is the discipline that now must govern AI-mediated work.
Signal Fidelity Group exists to bring that discipline to the new intermediary.
LIRA is the closed-loop control system at the core of every Signal Fidelity Group application — the way we govern meaning as it passes through machine intermediaries.
LIRA evaluates whether an AI-mediated output remains faithful to the reference signal it is supposed to preserve. When the output drifts, LIRA can route, remediate, block, escalate, or generate evidence of what changed.
The job of every SFG application is to determine whether AI output is still saying, proving, and doing what it was authorized to say, prove, or do.
What source, claim, permission, or human contribution is in force?
What did the AI system generate, transform, summarize, or act upon?
Inference — the act of an intermediary interpreting a message and conveying it to an audience. For a century, intermediaries were human. Today, the intermediary is a model, and the inference is what the audience receives.
How far did the output move from the authorized signal?
Should the system allow, remediate, block, escalate, or attenuate the action?
Can the decision be audited, verified, and defended later?
Human authorship. Regulated communication. Agentic action. Three signals, three intermediary chains, one control discipline.
RightsDocket protects the fidelity of human authorship in AI-assisted creative work. It captures contributor records, AI-use logs, and creation evidence, then produces a structured authorship record creators can hand to copyright examiners, distributors, sync buyers, and counsel. The Human Authorship Evidence Platform for AI-Assisted Audio.
CAMS — internal code name; the final product name is in development — protects the fidelity of approved meaning in regulated communications. Built for environments where language must be accurate, approved, auditable, and defensible: pharmaceutical, medical device, financial services, and other industries where every claim is tied to evidence, every message is tied to a review, and every output carries downstream regulatory exposure.
ZTAF — internal code name; the final product name is in development — protects the fidelity of agent-to-agent action. As AI agents begin to request, negotiate, approve, escalate, and act on behalf of people and institutions, they need more than access controls. They need inference controls: identity, intent, permission, scope, evidence, escalation, and handoff discipline.
For a century, the ROI of communications came from earned third-party validation. AI is now the third party. AI creates business value only when its outputs can be approved, deployed, reused, monetized, audited, and defended. Without that layer, AI output stops at the demo stage. With it, AI output becomes operational.
The companies that build the infrastructure to trust their own AI outputs will be the companies that capture AI’s value — not the companies that generate the most. Trust isn’t an ethics sidebar. It is the same conversion layer communications has always sold, now flowing through machines.
Signal Fidelity Group builds that layer.

Signal Fidelity Group was founded by Abhi Basu after twenty years in regulated communications — pharmaceutical, medical device, and biotechnology — leading global strategy for multi-billion-dollar portfolios at companies including Johnson & Johnson MedTech, Takeda, and Boston Scientific.
That background shaped SFG’s core thesis: communications professionals have been operating an inference control system for a century. We just did not have the vocabulary to describe it. We managed how messages traveled through journalists, analysts, regulators, sales reps, medical liaisons, and counsel — intermediaries whose internal state we could not fully observe and whose decisions we could only shape indirectly through careful signal design, node selection, timing, and measurement.
Large language models are the first machines built on the same operational principles as the intermediary chains we have always managed. They are non-deterministic, probabilistic, and inference-based. The discipline that has governed corporate communication for a century is the discipline that now must govern AI-mediated work.
Signal Fidelity Group exists to bring that discipline to the new intermediary.
For AI-assisted work where human contribution must be documented and defended.
Start a creator conversation →For organizations that need AI outputs to remain aligned with approved claims, evidence, and review processes.
Discuss approval-grade AI →For teams designing systems where agents act across tools, permissions, workflows, or institutional boundaries.
Talk about agent governance →For people who see the trust layer as where the next AI value pool will compound.
Start an investor conversation →Signal Fidelity Group is an inference-control infrastructure company. It builds systems that protect the fidelity of AI-mediated outputs across human authorship, organizational communications, and agent-to-agent action.
Signal Fidelity Group helps determine whether AI output remains aligned with the source, claim, permission, evidence, audience, or intent it was supposed to preserve. When output drifts, SFG systems can route, remediate, block, escalate, or create an auditable evidence record.
LIRA is Signal Fidelity Group’s Looped Inference Regulation Architecture. It is a closed-loop control architecture for evaluating AI-mediated outputs against authorized reference signals and selecting the right intervention when drift occurs.
RightsDocket is an authorship and provenance system for AI-assisted creative work. It documents human contribution, AI use, supporting evidence, and claim-ready records.
CAMS is the internal code name for SFG’s regulated communications product. The final product name is in development. CAMS protects the fidelity of approved meaning in environments where language must be accurate, approved, auditable, and defensible — pharmaceutical, medical device, financial services, and adjacent regulated industries. Design partner conversations open this quarter.
ZTAF is the internal code name for SFG’s agentic AI security product. The final product name is in development. ZTAF protects the fidelity of agent-to-agent action — adding inference controls (identity, intent, permission, scope, evidence, escalation, handoff discipline) on top of conventional access controls. Design partner conversations open this quarter.
Inference control matters because AI systems increasingly transform language into decisions, recommendations, and actions. Without control, outputs can drift away from authorized meaning, approved claims, human contribution, or delegated authority.