{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8522327","patent":{"patent_number":"US-8522327","title":"Multi-step captcha with serial time-consuming decryption of puzzles","assignee":null,"inventors":[],"filing_date":"2011-08-10T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["G06F","G06F","H04L","G06F","G06F"],"num_claims":20,"abstract":"A system and method for implementing a multi-step challenge and response test includes steps or acts of: using an input/output subsystem for presenting a series of challenges to a user that require said user to correctly solve each challenge before a next challenge is revealed to the user; receiving the user's response to each challenge; and submitting a last response in the series of challenges to a server for validation. The method further includes: using a processor device configured to perform for each challenge in the series of challenges: internally validating the response by comparing the user's response to a correct response; and using the user's response, decrypting the next challenge to reveal the next challenge; wherein the next challenge remains obfuscated until a previous challenge is correctly solved."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Multi-step captcha with serial time-consuming decryption of puzzles","description":"A system and method for implementing a multi-step challenge and response test includes steps or acts of: using an input/output subsystem for presenting a series of challenges to a user that require sa","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8522327","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-8522327","citation_suggestion":"Patentable. \"Multi-step captcha with serial time-consuming decryption of puzzles\" (US-8522327). https://patentable.app/patents/US-8522327","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8522327","json":"https://patentable.app/api/llm-context/US-8522327","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T20:06:17.186Z"}