{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9639689","patent":{"patent_number":"US-9639689","title":"User authentication","assignee":null,"inventors":[],"filing_date":"2013-12-23T00:00:00.000Z","publication_date":"2017-05-02T00:00:00.000Z","cpc_codes":["G06F","G06F","H04L","H04W","H04W","G06F"],"num_claims":12,"abstract":"There is disclosed a technique for use in authentication. The technique comprises selecting an authentication challenge when an authentication request is deemed risky. An attack threat determined to be associated with the authentication request acts as a decision factor in the selection of the authentication challenge such that a biometric challenge is selected in the event that the attack threat describes a stolen device and an out-of-band challenge is selected in the event that the attack threat describes a stolen identification credential."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"User authentication","description":"There is disclosed a technique for use in authentication. The technique comprises selecting an authentication challenge when an authentication request is deemed risky. An attack threat determined to b","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9639689","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9639689","citation_suggestion":"Patentable. \"User authentication\" (US-9639689). https://patentable.app/patents/US-9639689","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9639689","json":"https://patentable.app/api/llm-context/US-9639689","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:20:44.896Z"}