Casinos, sportsbooks, and Web3 platforms face strict rules on knowing their customers and stopping illicit funds. The “stack” of KYC/AML tools decides how smooth onboarding feels for players and how compliant operators stay with regulators. Three building blocks—OCR, liveness checks, and PEP screening—carry most of the load.
OCR: reading documents without human eyes
Optical Character Recognition (OCR) extracts data from passports, driver’s licenses, and utility bills. It turns photos into machine-readable text so systems can cross-check names, dates, and numbers.
Good OCR reduces manual review, speeds up account approval, and cuts costs. Weak OCR forces resubmissions, frustrates players, and increases fraud risk. Operators often pair OCR with document templates and security-feature detection to catch fakes.
For players, the tip is simple: upload clear, unedited images with all corners visible. Cropping or glare often breaks OCR, leading to delays and repeat requests.
Liveness: proving the user is real and present

Liveness checks ensure the person submitting ID is alive and in front of the camera, not a photo or replay. Systems ask for head turns, blinking, or random prompts. Advanced methods track depth, infrared reflection, or micro-movements.
Casinos rely on liveness to block stolen documents from passing KYC. Regulators expect proof that the account is controlled by the verified individual.
Players should treat liveness as a quick security handshake. Stable lighting and a neutral background help. Declining to complete liveness usually freezes deposits and withdrawals until the check is done.
PEP and sanctions screening: the continuous filter
PEP stands for Politically Exposed Person. AML rules require operators to flag customers in sensitive roles or close to them. Sanctions lists (domestic and international) expand this scope further. Screening compares customer names and details against these lists at signup and throughout the account life cycle.
This process is often silent for players, unless a match appears. False positives can happen if you share a name with someone on a list. Clearing these takes extra documentation but is mandatory.
For operators, failing to screen is catastrophic—fines, license loss, and even criminal penalties. For players, it’s an occasional inconvenience that protects platform legitimacy.
How the stack fits together
OCR verifies documents, liveness proves presence, and PEP/sanctions screening checks background risk. Together they build a funnel: documents first, then biometric proof, then ongoing monitoring.
Operators may add fraud layers like device fingerprinting, geo-blocks, and source-of-funds checks. But OCR, liveness, and PEP screening remain the universal core.
At-a-glance stack table
Layer | What It Does | Risk Addressed | Player Impact |
---|---|---|---|
OCR | Reads and validates ID docs | Fake or altered documents | Requires clear uploads |
Liveness | Confirms person is real/present | Stolen ID, deepfake, replay | Short video or selfie task |
PEP/AML | Screens against lists and watch | Political or sanctions exposure | Background, rarely visible |
Player checklist for smoother KYC

- Use official documents, uncropped, in good light.
- Complete liveness in one session; avoid poor connections.
- Keep address proofs current (within 90 days).
- Be prepared to explain name mismatches or multiple addresses.
- Expect repeat checks if your activity volume rises.
For most players, KYC/AML is a one-time speed bump. For operators, it’s a permanent obligation that evolves with regulations. The better the stack, the smoother the balance between security and play.