Identity Verification SDK with AML, Age Checks & Liveness
Most teams don't want to build identity verification — they want to add it. A few lines of code, a flow users actually finish, and the compliance boxes ticked. That's what an identity verification SDK is for, and it's exactly what Flonk ships: document checks, face match, liveness detection, Proof of Address and AML screening behind one integration.
Your first 50 verifications are free, then it's a flat €0.99 each — so you can run a real pilot before anything hits an invoice.
What Is an Identity Verification SDK?
An identity verification SDK is a ready-made verification flow you embed in your product instead of building it yourself. With Flonk you can integrate in three ways, depending on how much control you want:
KYC SDK — the developer-first path: import the SDK, call it, get a result.
KYC widget — a drop-in verification widget: one script, an embedded flow, no UI to design.
Identity verification API — REST endpoints for full back-end control.
Same verification engine underneath — you just pick the integration surface that fits your stack.
What's Included in a Verification?
A single verification is a full identity check, not just an ID photo scan:
Document verification — reads and authenticates passports, national IDs and driver's licences; flags forgery, tampering and expiry.
Face match (1:1) — confirms the selfie and the document portrait are the same person.
Liveness detection — proves a real, live human is at the screen now — not a photo, a replay, or a deepfake.
Proof of Address verification — extracts and cross-checks the address on a bill or statement against the verified identity.
Age verification — confirms the user meets a minimum age, exposing as little personal data as the use case allows.
AML screening — checks the identity against sanctions and watchlists.
Need more signals? The platform keeps shipping additional checks and ongoing updates, so your integration gets stronger without a rewrite.
How It Works
Trigger the flow from your app — SDK call, embedded widget, or API request.
The user captures their document and a live selfie; Flonk runs document authentication, face match and liveness in seconds.
Optional Proof of Address, age verification and AML screening run in the same pass.
You get a clear pass / review / fail result back — in the SDK callback, or via webhooks and JSON responses if you're on the API.
A sandbox lets you test the whole thing end-to-end before going live.
Built for Developers
Flonk is designed so you don't need a dedicated compliance-engineering team:
AI-assisted integration does the heavy lifting — document parsing, capture-quality checks and routing decisions are automated, so your code stays small.
Any stack, any site — web, mobile or back office.
Fast and secure by default — encrypted data, verifications in seconds.
The point of a good KYC SDK is that going live feels like adding a feature, not starting a project.
SDK Features
One-line SDK import, or a single-script KYC widget embed.
Mobile flow with QR handoff — start on desktop, finish the capture on a phone.
White-label UI that matches your brand.
Webhooks + JSON responses for the identity verification API path.
Sandbox environment for safe testing.
Use Cases
Telehealth & the medical sector
Online care needs to know the patient is really there and old enough for a given treatment or prescription. Liveness detection plus face match confirm a live person at the screen, while age verification gates anything age-restricted — without the clinic having to store sensitive documents itself.
Age-restricted & licensed commerce
Selling something only legal for the right person, in the right place? For example, issuing a cannabis certificate in jurisdictions where it's permitted — Flonk confirms identity and age at the point of sale so you stay compliant in regulated markets.
Everywhere else identity matters
Fintech onboarding, marketplaces, crypto, gaming, access control — wherever you must trust who signed up, the same identity verification SDK, widget or API covers it. Integrate it anywhere.
Pricing
First 50 verifications: free — a real proof of concept, not a demo.
Then €0.99 per verification — flat, predictable, pay-as-you-go. No seats, no minimums.
You can validate the entire flow — document, face, liveness, Proof of Address, age and AML — before it shows up on a bill.
Security & Compliance
Verification is only useful if it's trustworthy. Flonk encrypts identity data, minimises what's retained, and is built around European compliance from the ground up. On the roadmap: planned integration with the EU's eIDAS 2.0 framework and the European Digital Identity Wallet, so the identities you verify today stay aligned with tomorrow's standards.
Frequently Asked Questions
Is it an SDK, a widget, or an API?
All three. Use the KYC SDK for the deepest integration, the KYC widget for a one-script embed, or the identity verification API for full back-end control.
What does a verification include?
Document verification, face match, liveness detection, Proof of Address, age verification and AML screening — in a single pass.
How much does it cost?
Your first 50 verifications are free, then €0.99 each.
Can I use it for age verification only?
Yes — age verification can run on its own or alongside the full identity check, with minimal data exposure.
Which industries is it for?
Telehealth and the medical sector, age-restricted and licensed commerce (e.g. cannabis certificates where permitted), fintech, crypto, marketplaces and more.
Get Started
Begin with your 50 free verifications and watch a full check run end-to-end. When you're ready to scale, email us — and note that enterprise requests are handled in the order they arrive, so reach out early to hold your place in the queue.
Ready to verify smarter? Drop in the SDK or the KYC widget today, or get in touch about an enterprise rollout and we'll map identity, age and AML checks to your exact use case.