Remote

Authentication the carrier sees. Fraud that never reaches your app.

Signalfy turns telecom network signals — SIM state, silent number match, location inference, age band — into a single developer-ready API that replaces SMS OTP with authentication that attackers cannot social-engineer away.

Services

Built for Series B+ fintechs, neobanks, and crypto exchanges with 100K–5M active users, engineering-led product teams frustrated by SMS OTP costs and SIM-swap exposure, under active regulatory pressure from PSD2, MiCA, or FFIEC, and triggered to act by a fraud incident, failed audit, or a competitor breach making headlines

Silent Number Verify — Carrier-Confirmed Phone Match

A single API call checks whether a submitted phone number matches its active SIM on the carrier network — no SMS sent, no user interaction required, no opportunity for a social-engineered intercept. Built for product teams replacing OTP flows that cost $0.05–$0.10 per message and remain bypassable at any carrier store. The check completes at network layer, meaning the signal exists before your app ever touches the session.

SIM Swap Shield — Pre-Transaction Fraud Block

A real-time pre-authorization check that queries whether a phone number has undergone a SIM swap or port-out within a configurable lookback window — 2 hours, 24 hours, or 72 hours — tuned to your team's specific risk threshold. Fraud teams currently discover SIM-swap account takeovers after funds have moved; this check runs before the transaction clears. The signal comes from inside the carrier network, not from a behavioral model guessing at the same data.

Account Takeover Webhooks — Continuous Number Monitoring

Rather than querying at transaction time, this service keeps a monitored list of enrolled phone numbers under continuous watch and pushes a webhook the moment any of them triggers a SIM swap, port-out, or anomalous roaming event. Designed for teams that need to act on account risk signals before a user initiates a transaction — not in response to one. Integrates directly into your alerting and case management stack without polling overhead.

Network Location Confirm — Step-Up Authentication Trigger

Uses cell-tower-inferred location to generate a risk signal when a transaction's stated geography diverges from where the device's SIM is currently connected on the carrier network. Gives authentication logic a ground-truth location check that runs without asking the user to share GPS data or install anything. Designed to trigger step-up authentication precisely and avoid friction on legitimate transactions — not to block broadly.

Carrier-Inferred Age Band Verification — Document-Free Onboarding Signal

Returns a network-level signal confirming whether a phone number's subscriber profile is consistent with 18+ or 25+ age bands, drawn from carrier data rather than identity documents. No document upload, no OCR pipeline, no user friction at the point of onboarding. Built for platforms that need an age signal for regulatory compliance or product eligibility without introducing the abandonment cost of a full identity document flow for every new user.

Carrier Coverage Intelligence Dashboard — Enterprise Signal Due Diligence

A self-serve portal giving enterprise buyers full visibility into Signalpath's carrier agreement depth, signal type availability, response latency by country, and coverage quality before committing to a production integration. Eliminates the black-box problem common with telecom API vendors who quote coverage claims that don't survive a technical evaluation. Designed for the security architect or technical lead who needs to present signal reliability to a compliance officer or procurement committee.

Why it converts

Specific positioning, not generic promises

Carrier-native signal access — SIM state, number

The problem: sms otp costs $0.05–0.10 per message at scale, adding six-figure monthly authentication bills while remaining trivially bypassable via a carrier store social engineering call. Carrier-native signal access — SIM state, number verify, and location inference come from inside the network, not from a software layer bolted on top, giving Signalfy data that pure-software fraud vendors structurally cannot replicate addresses this directly so the team ships faster without adding deployment risk.

Usage-based pricing with a live sandbox that

The problem: fraud teams have no automated pre-transaction check for sim swap activity — they discover account takeovers after funds have moved, not before. Usage-based pricing with a live sandbox that reflects production signal quality — developers can run real test calls and see actual latency and coverage before speaking to a salesperson addresses this directly so the team ships faster without adding deployment risk.

All four network signals (SIM swap, silent

The problem: existing identity api vendors require enterprise contracts and a sales call before a developer can run a single test call, killing the technical evaluation before it starts. All four network signals (SIM swap, silent verify, location, age inference) delivered through a single unified API integration rather than requiring separate vendor contracts for each signal type addresses this directly so the team ships faster without adding deployment risk.