How Authentication Works

1. Trigger Authentication

One API call. No SMS. No app download. No user friction.

2. Deliver Secure Challenge

Invisible to attackers — the challenge never touches the phone number layer.

3. Return Verified Response

Cryptographic proof of identity and intent plus 150+ device and network signals in a single response.

Enterprise calls SLC API on login or high-risk action

Challenge sent directly to SIM applet — bypasses phone number entirely

Hardware-signed response + risk telemetry returned

Carrier-Grade Deterministic Signals

Carrier-Grade Deterministic Signals

Through direct carrier integration, our API suite delivers real-time, deterministic identity signals that identify and stop the most advanced cyber attacks. Every signal flows through a dedicated channel, invisible to attackers and impossible to spoof, replacing probabilistic guesswork with cryptographic proof.

Through direct carrier integration, our API suite delivers real-time, deterministic identity signals that identify and stop the most advanced cyber attacks. Every signal flows through a dedicated channel, invisible to attackers and impossible to spoof, replacing probabilistic guesswork with cryptographic proof.

IMSI / IMEI match

IMSI / IMEI match

Cell tower location & network ID

Cell tower location & network ID

MNO-assigned IP address

MNO-assigned IP address

Roaming patterns & session consistency

Roaming patterns & session consistency

Device-SIM binding status

Device-SIM binding status

APN name & network type

APN name & network type

Book Demo

Insider Threat Intelligence

Hardware-rooted identity for workforce access, high-impact approvals, and enterprise trust.

Hardware-rooted identity for workforce access, high-impact approvals, and enterprise trust.

Workforce & Privileged Access Assurance

Protects access to systems, admin functions, and sensitive operations on enterprise-issued or managed devices. Prevents credential compromise, insider misuse, and unauthorized escalation.

Ideal for—Organizations where human access alone can cause systemic failure.

Outcome—Deterministic, auditable enforcement of workforce and privileged access decisions.

High-Impact Internal Approvals and Transactions

Secures treasury actions, wire approvals, and other high-impact financial or operational decisions. Replaces spoofable or phishable approval mechanisms with hardware-enforced authorization.

Ideal for—Organizations where a single approval moves money or creates irreversible exposure.

Outcome—Deterministic, auditable approval of high-impact financial and operational actions.

Enterprise-Oriented Trust Artifacts

Verifies the authenticity and provenance of enterprise-issued instructions, credentials, and attestations. Binds origin, delivery, device, and network integrity to prevent spoofing and replay attacks.

Ideal for—Organizations where enterprise-issued instructions must be provably authentic.

Outcome—Deterministic, auditable enterprise-issued trust artifacts.

Workforce & Privileged Access Assurance

Protects access to systems, admin functions, and sensitive operations on enterprise-issued or managed devices. Prevents credential compromise, insider misuse, and unauthorized escalation.

Ideal for—Organizations where human access alone can cause systemic failure.

Outcome—Deterministic, auditable enforcement of workforce and privileged access decisions.

High-Impact Internal Approvals and Transactions

Secures treasury actions, wire approvals, and other high-impact financial or operational decisions. Replaces spoofable or phishable approval mechanisms with hardware-enforced authorization.

Ideal for—Organizations where a single approval moves money or creates irreversible exposure.

Outcome—Deterministic, auditable approval of high-impact financial and operational actions.

Enterprise-Oriented Trust Artifacts

Verifies the authenticity and provenance of enterprise-issued instructions, credentials, and attestations. Binds origin, delivery, device, and network integrity to prevent spoofing and replay attacks.

Ideal for—Organizations where enterprise-issued instructions must be provably authentic.

Outcome—Deterministic, auditable enterprise-issued trust artifacts.

Multi-Signature (Multi-Sig) High-Risk Approval Flow

For sensitive actions such as large fund transfers, privilege escalations, or executive overrides, SLC Guardian supports multi-sig authorization, requiring confirmation from multiple trusted devices or approved users before execution.

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Verify Device Authenticity with GSMA Device Check™

Verify Device Authenticity with GSMA Device Check™

Verify Device Authenticity with GSMA Device Check™

Stop fraud at the device level by ensuring every transaction comes from an authenticated, legitimate handset. Validate device status against the world’s most accurate global registry of flagged devices—lost, stolen, broken, or under ownership/financial claim.

Stop fraud at the device level by ensuring every transaction comes from an authenticated, legitimate handset. Validate device status against the world’s most accurate global registry of flagged devices—lost, stolen, broken, or under ownership/financial claim.

Stop fraud at the device level by ensuring every transaction comes from an authenticated, legitimate handset. Validate device status against the world’s most accurate global registry of flagged devices—lost, stolen, broken, or under ownership/financial claim.

Instant Global Lookup—Check IMEI, MEID, or ESN against the GSMA Device Registry in real time.

Instant Global Lookup—Check IMEI, MEID, or ESN against the GSMA Device Registry in real time.

Ownership & Financial Claims—Identify devices under dispute before allowing high-trust actions.

Ownership & Financial Claims—Identify devices under dispute before allowing high-trust actions.

Lifecycle Risk Detection—Spot devices flagged during transit, repair, or insurance claims.

Lifecycle Risk Detection—Spot devices flagged during transit, repair, or insurance claims.

Reduce Fraud & Compliance Risk—Ensure only legitimate devices access your platform.

Reduce Fraud & Compliance Risk—Ensure only legitimate devices access your platform.

New Account Application
Applicant Details
Pending Review
NameAlex R. Donovan
Phone+1 (555) 019-3847
SSN Last 4••7291
SIM Identity Signals
SIM Tenure
Activated 2 days ago
PENDING
Number Port History
Ported 3x in 90 days
PENDING
Device-Identity Binding
No prior association
PENDING
Carrier Network Signal
Dedicated channel mismatch
PENDING
✕
Synthetic Identity Detected
SIM signals inconsistent with claimed identity — account creation blocked

Compliance & Governance

Enterprise controls, from logging to retention.

Immutable message logs with tamper-evident metadata

Role-based access, redaction and retention policies

Export to SIEM and case tools for audit and e-discovery

Get started

United States

IMSI: 310170123456789

10 mins Ago

Active