Verify Any Customer's Identity in Seconds
Identity verification software that confirms a real person is who they claim to be — combining document verification, biometric face match, liveness detection and data checks into one fast, compliant flow across 190+ countries.
Identity Verification, Done in One Flow
Identity verification (IDV) is the process of confirming that a person is genuinely who they claim to be before granting access to an account, product or service. It is the foundation of digital trust — and the first line of defence against impersonation, account-takeover and synthetic-identity fraud.
One Constellation's IDV combines four layers in a single check: document verification, biometric face match, liveness detection, and authoritative data validation. Together they answer three questions instantly — is the ID genuine, does the person match it, and are they really present? IDV is the engine behind KYC onboarding and ongoing re-verification.
A Complete Identity Verification Stack
Everything needed to establish and re-confirm identity, in one API and one dashboard. Comparing vendors? See our guide to the best identity verification software.
Document Verification
Authenticate passports, national IDs, driver's licences and residence permits from 190+ countries, with tamper and forgery detection. See Document Verification.
Biometric Face Match
Match the live selfie to the photo on the verified document with high-accuracy facial recognition.
Active Liveness Detection
Confirm a real, present person and defeat photos, replays, masks and AI deepfakes.
Data & Database Checks
Validate identity attributes against authoritative and government data sources where available.
Video Identity Verification
Assisted or unassisted video flows for regulated markets — see Video KYC.
One API, Web & Mobile SDKs
Embed verification into any onboarding journey with REST APIs, webhooks and iOS/Android SDKs.
From Selfie to Verified Identity in Under a Minute
Capture
The customer photographs their ID document and takes a guided selfie through your branded web flow or mobile SDK.
Authenticate the Document
The document is checked for genuineness — security features, fonts, MRZ and tamper signals — in real time.
Match & Liveness
The selfie is matched to the document photo, and liveness confirms the person is real and physically present.
Validate & Decide
Identity data is validated against available sources and a clear verified / refer decision is returned with full evidence.
Why Automated Identity Verification Wins
Verify in Seconds
Replace days of manual review with an automated decision that returns in seconds.
Stop Identity Fraud
Layered document, biometric and liveness checks block impersonation and synthetic identities.
Reduce Drop-Off
A fast, mobile-first flow keeps genuine customers from abandoning onboarding.
Audit-Ready Evidence
Every check, image and decision is logged for KYC and regulatory inspection.
Built for Regulated Identity Verification
Identity Verification FAQ
See Identity Verification Live
Book a 30-minute demo and watch a document, biometric and liveness check run end-to-end on real flows.
