{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9824357","patent":{"patent_number":"US-9824357","title":"Focus-based challenge-response authentication","assignee":null,"inventors":[],"filing_date":"2014-10-09T00:00:00.000Z","publication_date":"2017-11-21T00:00:00.000Z","cpc_codes":["G06Q","G06F","G06F","H04L","H04L","G06F","G06F"],"num_claims":20,"abstract":"A method for authenticating an access attempt includes detecting an access attempt by a user device over a network. A challenge-response authentication is provided over the network to the user device. The challenge-response authentication includes an image having a plurality of image objects. The challenge-response authentication is operable to display the image such that at least one of the plurality of image objects is in focus and at least one of the plurality of image objects is not in focus. In response to providing the challenge-response authentication, an authentication response is received from the user device over the network, and it is determined whether the authentication response includes an indication of the at least one of the plurality of image objects that is in focus to determine whether to authenticate or deny the access attempt."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Focus-based challenge-response authentication","description":"A method for authenticating an access attempt includes detecting an access attempt by a user device over a network. A challenge-response authentication is provided over the network to the user device.","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9824357","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-9824357","citation_suggestion":"Patentable. \"Focus-based challenge-response authentication\" (US-9824357). https://patentable.app/patents/US-9824357","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9824357","json":"https://patentable.app/api/llm-context/US-9824357","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:22:13.401Z"}