{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8511547","patent":{"patent_number":"US-8511547","title":"Methods and systems for two-factor authentication using contactless chip cards or devices and mobile devices or dedicated personal readers","assignee":null,"inventors":[],"filing_date":"2006-12-22T00:00:00.000Z","publication_date":"2013-08-20T00:00:00.000Z","cpc_codes":["G07F","G06F","G06F","G06Q","G06Q","G06Q","H04L","G06F"],"num_claims":21,"abstract":"Generating authentication data for use in a transaction by providing a contactless payment device or smart card configured to communicate with a mobile device, placing the contactless chip card in a proximity to the mobile device to instantiate communication between the contactless chip card and the mobile device, inputting a first input value into the mobile device, communicating data derived from the first input value from the mobile device to the contactless chip card, the contactless chip card converting a set of conversion data, including the first input value, into at least one dynamic value based at least in part on a secret value, communicating the dynamic value from the contactless chip card to the mobile device, and communicating authentication data based at least in part on the dynamic value to a user. In some embodiments the first input value is a Personal Identification Number (PIN), a challenge, or both a PIN and a challenge."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Methods and systems for two-factor authentication using contactless chip cards or devices and mobile devices or dedicated personal readers","description":"Generating authentication data for use in a transaction by providing a contactless payment device or smart card configured to communicate with a mobile device, placing the contactless chip card in a p","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8511547","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-8511547","citation_suggestion":"Patentable. \"Methods and systems for two-factor authentication using contactless chip cards or devices and mobile devices or dedicated personal readers\" (US-8511547). https://patentable.app/patents/US-8511547","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8511547","json":"https://patentable.app/api/llm-context/US-8511547","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T17:06:38.082Z"}