{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","research_id":"eoa_inverse_innovation_exp12_light_screen_20260805","cell_id":"authority_legitimacy_and_consent_foundations__computer_science","search_lanes":{"direct_problem_and_intervention":{"queries":["FPGA shared chassis JTAG programming interlock multiple keys custodian relay","FPGA JTAG chain programming reset multiple devices shared service port isolation","JTAG port physical key switch access control hardware interlock","firmware programming connector keyed interlock maintenance switch hardware"],"source_ids":["SRC1","SRC3"],"no_result_note":"No retained source disclosed the complete combination of scope-dependent affected-party keys, physical interruption of all state-changing programming conductors, and passive fixture qualification."},"synonyms_and_historical_terms":{"queries":["dual key switch two person control electrical interlock series contacts","two-man rule key switch electrical control circuit","trapped key interlock multiple keys exchange unit all keys required","key exchange unit electrical contacts multiple keys input output selector interlock"],"source_ids":["SRC2","SRC4"],"no_result_note":null},"products_practices_and_standards":{"queries":["site:rockwellautomation.com trapped key interlock key exchange unit multiple keys official","site:iso.org ISO 14119 interlocking devices guards principles design","site:pilz.com force-guided contacts relay EN 50205 official","JTAG analog switch isolation target voltage detect programmer buffer product"],"source_ids":["SRC2","SRC3","SRC4"],"no_result_note":null},"component_combination":{"queries":["multi key electrical switch all keys required contacts series interlock industrial product","FPGA programming cable hardware selector JTAG switch multiple targets isolation product","multi user physical approval hardware firmware update dual control","FPGA JTAG write protect switch reset isolation relay"],"source_ids":["SRC1","SRC2","SRC3","SRC4"],"no_result_note":"The search found the component practices separately and in adjacent combinations, but not a source showing their complete application to consent-scoped firmware service in a shared chassis."}},"sources":[{"source_id":"SRC1","title":"4.2.1 Shared Use of JTAG Lines","publisher":"Microchip Technology Inc.","url":"https://onlinedocs.microchip.com/oxy/GUID-F626284A-58F0-4C25-A6F3-0EA5054F3E2B-en-US-6/GUID-4ED96E08-1FE1-4F03-9036-4C59FEE68420.html","source_type":"OFFICIAL_GUIDANCE","claims_supported":["A JTAG daisy chain allows one connector to serve as the in-system-programming interface for several devices.","Shared programmer lines therefore create a technically real multi-device reach problem requiring an accurate conductor and target map."]},{"source_id":"SRC2","title":"440T Trapped Key Interlock Exchange Unit Switch","publisher":"Rockwell Automation","url":"https://www.rockwellautomation.com/en-us/products/hardware/safety-products/440t-exchange-unit.html","source_type":"FIRST_PARTY_PRODUCT","claims_supported":["Commercial trapped-key exchange units physically link devices in complex operating sequences.","Available configurations include multiple primary keys and simultaneous secondary-key release, establishing adjacent multi-key mechanical interlock practice.","The product identifies functional-safety data and use under machinery-safety classifications, but does not describe custodian-scoped JTAG gating."]},{"source_id":"SRC3","title":"JTAG Isolator Box","publisher":"SEGGER Microcontroller GmbH","url":"https://www.segger.com/products/production/flasher/accessories/isolators/jtag-isolator/","source_type":"FIRST_PARTY_PRODUCT","claims_supported":["A commercial interposer can be placed physically between a programmer and target and isolate JTAG signals including TRST, TDI, TMS, TCK, RTCK, TDO, and RESET.","Target-voltage range checks and overvoltage, overcurrent, and ESD protections are established adjacent product features.","Basic isolation alone is not suitable for hazardous voltages without a second protection measure."]},{"source_id":"SRC4","title":"ISO/TR 24119:2015 — Safety of machinery — Evaluation of fault masking serial connection of interlocking devices associated with guards with potential free contacts","publisher":"International Organization for Standardization","url":"https://www.iso.org/standard/63160.html","source_type":"OFFICIAL_STANDARD","claims_supported":["Physical serial connection of multiple interlocking contacts is an established safety-control topology.","Series-connected contacts can create fault-masking and diagnostic-coverage concerns that must be assessed rather than assuming series wiring is intrinsically fail-safe."]}],"problem_evidence":{"status":"PARTLY_SUPPORTED","finding":"The electrical core of the problem is visible: official guidance confirms that one JTAG connector can reach several daisy-chained devices, while a commercial JTAG interposer identifies reset and the principal JTAG lines as target-crossing conductors. The searched sources do not establish the proposal's particular four-project chassis, custodial conflict, prevalence, or social-legitimacy consequences.","source_ids":["SRC1","SRC3"]},"closest_prior_art":[{"name":"Rockwell Automation 440T trapped-key exchange units","source_ids":["SRC2"],"overlap":"Uses physically distinct keys and predetermined mechanical interlocking sequences, including configurations with multiple primary keys, to prevent an operator from bypassing required machine states.","remaining_difference":"It does not disclose a selector-dependent affected-party matrix that directly gates every firmware-write and reset conductor to one zone or a shared controller, nor passive electrical-fixture qualification."},{"name":"SEGGER JTAG Isolator Box","source_ids":["SRC3"],"overlap":"Places a hardware interposer between programmer and target, handles JTAG and RESET conductors, accommodates bounded target voltages, and provides electrical protection independent of application software.","remaining_difference":"It isolates and protects an interface but does not require contemporaneous grants from multiple separately controlled key holders or map those grants to the selected target's blast radius."},{"name":"Serial physical interlock-contact architectures","source_ids":["SRC4"],"overlap":"Establishes series-connected physical contacts as a recognized interlock architecture and identifies its diagnostic and fault-masking issues.","remaining_difference":"It does not provide the proposal's multi-project authority mapping, mechanical port selection, programmer-interface conductor set, or analog fixture code."},{"name":"Shared JTAG daisy-chain practice","source_ids":["SRC1"],"overlap":"Shows that one service connector can reach several programmable devices, matching the proposed intervention's shared-access substrate.","remaining_difference":"It describes connectivity rather than any multi-holder, scope-specific, fail-open authorization barrier."}],"prior_art_disposition":"ADJACENT_PRIOR_ART","contrastive_claim_remaining":"Conditional on a complete conductor map and genuinely separate key custody, a fixed, nonprogrammable selector-specific series topology can require the maintainer, exactly every custodian electrically affected by the selected scope, and a compatible fixture before any mapped firmware-write or reset conductor becomes continuous. The retained prior art separately shows shared JTAG reach, multi-key mechanical sequencing, JTAG isolation and voltage protection, and serial-contact interlocks, but not this complete affected-set-dependent combination.","contrastive_claim_falsifier":"The claim is falsified if any missing required key, wrong scope, incompatible fixture, safety veto, power loss, or key withdrawal still permits a protected downstream waveform or target transition; if an authorized scope reaches an unselected zone; if one person effectively controls all nominally separate keys; or if prior art is found that already implements the same selector-dependent affected-party conjunction across all state-changing programming conductors.","gates":{"adequate_source_search":{"status":"PASS","rationale":"The bounded search covered direct descriptions, dual-control and trapped-key terminology, first-party products, official standards, shared JTAG practices, isolation, voltage compatibility, and component combinations. Four opened sources from four publishers were retained, including official guidance, first-party products, and an official standard.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"supported_problem":{"status":"PASS","rationale":"Shared multi-device programmer reach and target-crossing JTAG/reset conductors are directly supported, although the proposed organizational setting and prevalence remain unverified; accordingly the problem is only partly supported.","source_ids":["SRC1","SRC3"]},"distinct_testable_claim":{"status":"PASS","rationale":"The remaining claim predicts directly observable conductor continuity, waveforms, relay states, and target transitions for enumerated key, selector, fixture, veto, and power conditions, and differs from each retained adjacent practice.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"bounded_next_test":{"status":"PASS","rationale":"An isolated low-voltage latch emulator permits exhaustive testing of all 32 maintainer-plus-custodian key combinations at each of five scopes, followed by wrong-fixture, veto, power-loss, and withdrawal tests. It should additionally inject single faults and check contact welding or fault masking before any live-board extension.","source_ids":["SRC3","SRC4"]},"no_obvious_safety_or_authority_stop":{"status":"PASS","rationale":"No obvious stop applies to the specified isolated, low-voltage, recoverable bench test. Hazardous voltages require additional isolation, and serial-contact fault masking must be evaluated. The test also cannot infer informed consent, representation, or legitimacy from possession or insertion of a key.","source_ids":["SRC2","SRC3","SRC4"]}},"screen_survival":true,"world_novelty_boundary":"This bounded public-web screen supports only an adjacent-prior-art disposition and a testable residual combination. It cannot establish world novelty, patentability, market size, prevalence, expert acceptance, social legitimacy, or realized value; unindexed patents, custom industrial panels, internal laboratory fixtures, and non-English disclosures may contain closer art."}