{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8477038","patent":{"patent_number":"US-8477038","title":"Method of producing a proof of presence or of operation of an entity in an identified zone for a duration greater than a given threshold, and monitoring system","assignee":null,"inventors":[],"filing_date":"2008-12-18T00:00:00.000Z","publication_date":"2013-07-02T00:00:00.000Z","cpc_codes":["G07C"],"num_claims":18,"abstract":"A method for producing a proof of the presence and/or of the availability of an entity in a site over a period that is greater than or equal to a presence threshold, the method including: successively transmitting messages, the messages being generated from a secret such that the secret may be reconstituted by having the knowledge of a given number of messages that is greater than or equal to a threshold, each message being transmitted over a transmission period whose duration is chosen such that the product of the duration of the transmission period times the threshold is substantially equal to the presence threshold; comparing the secret and a secret candidate generated from messages received by the entity; the proof being produced only if the secret and the secret candidate are equal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method of producing a proof of presence or of operation of an entity in an identified zone for a duration greater than a given threshold, and monitoring system","description":"A method for producing a proof of the presence and/or of the availability of an entity in a site over a period that is greater than or equal to a presence threshold, the method including: successively","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8477038","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-8477038","citation_suggestion":"Patentable. \"Method of producing a proof of presence or of operation of an entity in an identified zone for a duration greater than a given threshold, and monitoring system\" (US-8477038). https://patentable.app/patents/US-8477038","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8477038","json":"https://patentable.app/api/llm-context/US-8477038","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T20:11:09.209Z"}