{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9681263","patent":{"patent_number":"US-9681263","title":"Passive device monitoring using radio frequency signals","assignee":null,"inventors":[],"filing_date":"2015-12-16T00:00:00.000Z","publication_date":"2017-06-13T00:00:00.000Z","cpc_codes":["H04W","H04L","H04W","H04W","H04W","H04W","H04W"],"num_claims":20,"abstract":"A rule-based machine learning system monitors frequency bands to detect transmissions from nearby active transmitters, such as those associated with wireless mobile devices. The system logs unique identifiers (UID) embedded in detected transmissions, recognizes patterns of UID detection over time, and selectively takes action when UIDs are detected and when they are expected but absent."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Passive device monitoring using radio frequency signals","description":"A rule-based machine learning system monitors frequency bands to detect transmissions from nearby active transmitters, such as those associated with wireless mobile devices. The system logs unique ide","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9681263","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-9681263","citation_suggestion":"Patentable. \"Passive device monitoring using radio frequency signals\" (US-9681263). https://patentable.app/patents/US-9681263","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9681263","json":"https://patentable.app/api/llm-context/US-9681263","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T08:47:47.357Z"}