Face toolkit
Beyond one-off checks: 1:1 verification for 'is this the same person?', and the 1:N gallery for 'have we seen this person before?' — the primitive behind duplicate-account detection.
1:1 — verify two faces
Document portrait vs live photo. Cards with a ghost portrait are handled — the main portrait is matched.
const r = await client.verify(docImage, selfie); // r.match, r.similarity1:N — the face gallery
Register a face under your reference, then search or dedupe with a different photo of the same person.