{
 "@context": "https://schema.org",
 "@type": "DefinedTerm",
 "@id": "https://wulfkaal.github.io/entities/biometrics",
 "identifier": "kaal:entity:biometrics",
 "name": "Biometrics",
 "termCode": "biometrics",
 "inDefinedTermSet": {
  "@id": "https://wulfkaal.github.io/entities/index.json"
 },
 "author": {
  "@type": "Person",
  "name": "Wulf A. Kaal",
  "identifier": "https://orcid.org/0000-0003-0757-275X"
 },
 "dateModified": "2026-07-29",
 "canonicalForm": "https://wulfkaal.github.io/entities/biometrics.md",
 "sha256": "4a7c322be3f7af281da66e147c0199e7d0771004addc832514a5ea959093fdf8",
 "additionalProperty": [
  {
   "@type": "PropertyValue",
   "name": "status",
   "value": "derived"
  },
  {
   "@type": "PropertyValue",
   "name": "claim_count",
   "value": 2
  },
  {
   "@type": "PropertyValue",
   "name": "work_count",
   "value": 1
  },
  {
   "@type": "PropertyValue",
   "name": "year_span",
   "value": [
    "2018",
    "2018"
   ]
  },
  {
   "@type": "PropertyValue",
   "name": "non_current_claims",
   "value": 0
  }
 ],
 "subjectOf": [
  {
   "@type": "Claim",
   "@id": "https://wulfkaal.github.io/claims/3266953-029",
   "identifier": "kaal:claim:3266953-029",
   "text": "Identity verification does not fix the sockpuppet problem, because whenever the reputation is genuinely valuable a sockpuppet operator can afford to clear whatever verification hoops are in place, including stealing biometric data, and then inflate reputation as before.",
   "abstract": "The problem with this is, if the reputation is genuinely valuable, a sockpuppet account can afford to go through whatever hoops you have in place to create false identities (including stealing biometric data if necessary), then increase their reputation arbitrarily, as described above.",
   "citation": "Craig Calcaterra, Wulf A. Kaal, Gopinath Sivalingam, Reputation Protocol for the Internet of Trust - Conceptual Whitepaper (2018). SSRN: https://ssrn.com/abstract=3266953",
   "datePublished": "2018",
   "claim_type": "failure",
   "confidence": "argued",
   "is_failure_mode": true,
   "scope_conditions": [
    "reputation that carries real economic value"
   ],
   "source_pdf_sha256": "781758dea356e55d79c73ad7f1debe7c83de398bd1cd9e0a9a6c2802f276b4c0",
   "status": "current"
  },
  {
   "@type": "Claim",
   "@id": "https://wulfkaal.github.io/claims/3266953-037",
   "identifier": "kaal:claim:3266953-037",
   "text": "Semada's biometric onboarding technology uses zero knowledge proofs so that users retain continuing anonymity once they are onboarded.",
   "abstract": "Semada uses zero knowledge proofs for its biometrics onboarding technology that guarantees continuing anonymity for users, once onboarded.",
   "citation": "Craig Calcaterra, Wulf A. Kaal, Gopinath Sivalingam, Reputation Protocol for the Internet of Trust - Conceptual Whitepaper (2018). SSRN: https://ssrn.com/abstract=3266953",
   "datePublished": "2018",
   "claim_type": "design",
   "confidence": "asserted",
   "is_failure_mode": false,
   "scope_conditions": [
    "mobile biometric sign in to a wallet",
    "biometric onboarding is optional"
   ],
   "source_pdf_sha256": "781758dea356e55d79c73ad7f1debe7c83de398bd1cd9e0a9a6c2802f276b4c0",
   "status": "current"
  }
 ],
 "description": "2 claims in the published works of Wulf A. Kaal carry the concept tag 'biometrics'. Derived node: a roster, not an adjudicated definition."
}