Liveness (selfie) verification

Performs liveness verification using a selfie image. Delegates to the configured verification provider with verification_type="liveness".

Supported media types: jpeg/jpg, png, BMP.

Guidelines:

  • Higher image size increases upload and processing time; reduce image size while preserving required quality.
  • Minimum recommended image size: 300x300 pixels with the face covering ~75% of the frame (≈220x220).
  • Capture only live photographs — do not use printed photos or video-graphed frames.
  • Background should be plain white and no other person should appear in the frame.
  • Capture vertically (portrait), avoid skew/tilt; watermark (if any) must be readable.
  • Ensure good lighting so the user is clearly visible and recognizable.
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