{
  "title": "Nail salon tool tray and workstation evidence for AI",
  "source_page": "https://fiund.com/industries/nail-station-tray-trace-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "A ready card does not identify an off-camera tray",
    "context": "Two trays of inert blunt props and original station cards support a staged overhead task. No client service, chemical, face or actual hygiene procedure is recorded.",
    "records": [
      [
        "NS1",
        "Practice tray register",
        "Tray A has square marker and tool IDs A1/A2. Tray B has circle marker and B1/B2."
      ],
      [
        "NS2",
        "Visible change clip",
        "Square tray A removed; circle tray B placed in view. Reviewer signs card for station S after the clip."
      ],
      [
        "NS3",
        "Control image",
        "Ready card at station S2 visible, but tray marker and tool IDs outside frame. No S2 review record linked to the image."
      ]
    ],
    "question": "Which tray change is observable, and does S2's ready card establish its tray identity or an independently verified station state?",
    "answer": "NS1 and NS2 support the observed A-to-B tray change through the square and circle markers, with a separate station-S reviewer record. NS3 shows a card at S2 but hides the evidence needed to identify its tray. The card's presence alone does not supply a linked review or the missing visual identity. Report sequence, tray and sign-off as distinct fields without declaring sanitation or readiness from an unlinked prop.",
    "failureModes": [
      "Inferring an unseen tray from a nearby ready card.",
      "Transferring station S's sign-off to similarly labeled S2."
    ],
    "fields": [
      [
        "Tray marker and tool IDs",
        "Defines visible identity."
      ],
      [
        "Station and event sequence",
        "Links the swap to its location."
      ],
      [
        "Reviewer-card relationship",
        "Separates displayed labels from verified authorization."
      ]
    ],
    "holdout": "Show B's marker clearly at S2 but leave sign-off unlinked. Require identity to resolve while the review status remains open.",
    "boundary": "Use consenting adults, inert props and cleared footage. Exclude live services, clients, faces, chemicals and appointment records."
  }
}