{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9813907","patent":{"patent_number":"US-9813907","title":"Sensor-assisted user authentication","assignee":null,"inventors":[],"filing_date":"2016-06-29T00:00:00.000Z","publication_date":"2017-11-07T00:00:00.000Z","cpc_codes":["H04W","G06F","G06T","G06T","G06V","G06V","G06V","G06V","G06V","H04L","G06F","G06T","G06T","H04L","H04W"],"num_claims":20,"abstract":"Systems and techniques for user authentication are described. A portable electronic device can include an imaging sensor and a motion sensor. Multiple images of a face of a user can be acquired by using an imaging sensor. Motion information can be obtained by using a motion sensor. Next, a first motion vector can be determined based on the multiple images, and a second motion vector can be determined based on the motion information. The user can then be authenticated based on (1) determining a similarity measure between the first motion vector and the second motion vector, and (2) performing facial recognition on at least one of the multiple images. Note that the similarity measure can be used to detect a virtual-camera attack. Specifically, authentication can fail if the similarity measure is less than a threshold."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Sensor-assisted user authentication","description":"Systems and techniques for user authentication are described. A portable electronic device can include an imaging sensor and a motion sensor. Multiple images of a face of a user can be acquired by usi","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9813907","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-9813907","citation_suggestion":"Patentable. \"Sensor-assisted user authentication\" (US-9813907). https://patentable.app/patents/US-9813907","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9813907","json":"https://patentable.app/api/llm-context/US-9813907","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T14:40:13.834Z"}