> For the complete documentation index, see [llms.txt](https://docs.complycube.com/documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.complycube.com/documentation/product-guides/biometric-and-liveness-verification.md).

# Biometric & Liveness Verification

- [Identity Check](https://docs.complycube.com/documentation/product-guides/biometric-and-liveness-verification/identity-check.md): Passive selfie liveness detection, deepfake detection, and face match for KYC identity verification. ISO-certified PAD Level 2 biometrics to prevent spoofing.
- [Enhanced Identity Check](https://docs.complycube.com/documentation/product-guides/biometric-and-liveness-verification/enhanced-identity-check.md): Active video selfie liveness detection with motion and voice challenges, plus face match, for high-assurance KYC identity verification (ISO-certified PAD Level 2).
- [Age Estimation Check](https://docs.complycube.com/documentation/product-guides/biometric-and-liveness-verification/age-estimation-check.md): Selfie-based biometric age estimation and liveness detection for age-gating, using our ACCS 2:2021-certified age estimation technology.
- [Face Authentication Check](https://docs.complycube.com/documentation/product-guides/biometric-and-liveness-verification/face-authentication-check.md): Facial biometric authentication for passwordless login and account recovery.


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