{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.finger","code":"thing-q620207","url":"https://ver.cy/models/thing/q620207/","name":"finger","alternateNames":["female finger","human finger","middle finger","index finger","ring finger","little finger","right middle finger","left middle finger","right index finger","left index finger","right ring finger","left ring finger"],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A finger is one of usually five articulated digits at the end of a tetrapod hand, comprising phalanges and associated joints and soft tissues, attached to but not including a metacarpal, with functions that vary by species and digit.","purpose":"Enable an AI agent to identify an individual finger, record its observable condition and functional capabilities, and determine which interactions are appropriate under known constraints.","scope":{"in":["Finger identity, hand laterality, digit position and attachment status","Local segments, joints, fingertip, pad, skin and nail where present","Observed movement, sensation and contribution to hand tasks","Local condition, reported symptoms and changes over time","Finger-specific contact, loading and assistance constraints"],"out":["Whole-hand coordination and overall grip performance","Arm and wrist anatomy or movement except as context for finger observations","Person-level identity, health history and clinical diagnosis","Toes and other foot structures","Artificial fingers, prosthetic components and robotic grippers as independently modelled things","Rings, gloves, tools and other objects contacting the finger"],"boundaries":[]},"distinguishingFeatures":["Establish that the digit belongs, or previously belonged, to a hand rather than a foot; appearance alone does not settle this.","Identify one digit within the hand rather than treating the palm or the entire hand as the finger.","Distinguish biological tissue from an artificial replacement, recording a prosthesis as a related component.","Distinguish the complete digit or remaining digit from a nail, fingertip fragment or other local part.","Record thumb versus non-thumb identity explicitly rather than inferring interchangeable structure or movement."],"structure":{"bundles":[{"id":"digit-identity-and-boundaries","name":"Digit identity and boundaries","description":"Establish which finger is modelled and what physical extent belongs to it.","layers":[{"id":"hand-and-digit-location","name":"Hand and digit location","description":"Locate the individual digit within its associated hand.","findings":[{"id":"digit-designation","name":"Digit designation","description":"Record the supported digit designation and hand association, preserving ambiguity.","questions":[{"text":"Which hand is this finger associated with, and what establishes laterality?","id":"digit-designation-q01","kind":"provenance"},{"text":"Is this the thumb, index, middle, ring, little or an additional digit, and is that designation uncertain?","id":"digit-designation-q02","kind":"definition"}]}]},{"id":"physical-extent","name":"Physical extent","description":"Separate the individual finger from the hand, local fragments and replacements.","findings":[{"id":"attachment-and-part-boundaries","name":"Attachment and part boundaries","description":"Record attachment and remaining extent without assuming a complete or typical finger.","questions":[{"text":"What landmark defines this finger's proximal boundary with the hand for this model?","id":"attachment-and-part-boundaries-q01","kind":"boundary"},{"text":"Which portions are present, absent, detached or replaced, and how was this established?","id":"attachment-and-part-boundaries-q02","kind":"provenance"},{"text":"Which adjacent or attached structures require separate linked models?","id":"attachment-and-part-boundaries-q03","kind":"boundary"}]}]}]},{"id":"finger-structure-and-contact-surfaces","name":"Finger structure and contact surfaces","description":"Describe the finger's segments, joints and surfaces at the detail supported by evidence.","layers":[{"id":"segments-and-joints","name":"Segments and joints","description":"Identify present segments and articulations without imposing a uniform digit template.","findings":[{"id":"observed-structural-layout","name":"Observed structural layout","description":"Record identifiable segments, joints and measurement landmarks.","questions":[{"text":"Which segments and joints are established for this finger, and which are inferred or unobserved?","id":"observed-structural-layout-q01","kind":"provenance"},{"text":"What are the measured segment lengths or overall length, using which landmarks and posture?","id":"observed-structural-layout-q02","kind":"measurement"}]}]},{"id":"tip-pad-and-nail","name":"Tip, pad and nail","description":"Locate the surfaces involved in touch, support and tool contact.","findings":[{"id":"local-contact-geometry","name":"Local contact geometry","description":"Describe the fingertip, pad and nail where present, including coverings that affect contact.","questions":[{"text":"Which fingertip, pad, side or nail surface would contact the object in the proposed task?","id":"local-contact-geometry-q01","kind":"boundary"},{"text":"What local dimensions, nail projection or coverings affect that contact or fit?","id":"local-contact-geometry-q02","kind":"measurement"}]}]}]},{"id":"movement-and-task-contribution","name":"Movement and task contribution","description":"Describe demonstrated movement and the finger's role in specific hand actions.","layers":[{"id":"joint-specific-mobility","name":"Joint-specific mobility","description":"Record movement direction, extent and assessment conditions.","findings":[{"id":"demonstrated-movement","name":"Demonstrated movement","description":"Distinguish self-generated movement from externally assisted movement and untested capability.","questions":[{"text":"Which identified joints were observed moving, in which directions and through what measured range?","id":"demonstrated-movement-q01","kind":"measurement"},{"text":"Was the movement active, assisted or passively assessed, and what wrist posture and neighbouring-digit movement accompanied it?","id":"demonstrated-movement-q02","kind":"provenance"}]}]},{"id":"functional-participation","name":"Functional participation","description":"Connect digit movement and contact to an observed task.","findings":[{"id":"finger-role-in-task","name":"Finger role in task","description":"Record the finger's individual contribution without assigning it the outcome of the whole hand.","questions":[{"text":"During the observed task, did this finger point, tap, oppose another digit, support an object or contribute to grasping?","id":"finger-role-in-task-q01","kind":"definition"},{"text":"What outcome was attributable to this finger, and what depended on other digits, the wrist or assistance?","id":"finger-role-in-task-q02","kind":"boundary"},{"text":"What task conditions must remain comparable before this performance can inform another interaction?","id":"finger-role-in-task-q03","kind":"action"}]}]}]},{"id":"local-condition-and-sensation","name":"Local condition and sensation","description":"Capture visible condition and reported experience with location and time.","layers":[{"id":"surface-and-shape-observations","name":"Surface and shape observations","description":"Record visible local changes without converting them into diagnoses.","findings":[{"id":"local-condition-observation","name":"Local condition observation","description":"Locate changes in skin, nail, contour or alignment and retain observation limitations.","questions":[{"text":"What changes in skin integrity, nail appearance, contour, colour or alignment are observable, and where?","id":"local-condition-observation-q01","kind":"measurement"},{"text":"When and under what lighting, posture or covering conditions was the observation made, and is there a comparable earlier observation?","id":"local-condition-observation-q02","kind":"provenance"}]}]},{"id":"reported-experience","name":"Reported experience","description":"Represent sensation and discomfort as reports or documented assessments.","findings":[{"id":"sensation-and-discomfort-record","name":"Sensation and discomfort record","description":"Preserve the person's account and distinguish unassessed sensation from an absence of symptoms.","questions":[{"text":"What pain, numbness, tingling or altered touch is reported, at which part of the finger and under what conditions?","id":"sensation-and-discomfort-record-q01","kind":"measurement"},{"text":"Does this record come from the person's report or a documented assessment, and when was it obtained?","id":"sensation-and-discomfort-record-q02","kind":"provenance"}]}]}]},{"id":"finger-interaction-constraints","name":"Finger interaction constraints","description":"Determine what proposed contact, movement or loading is supported by available authorization and evidence.","layers":[{"id":"contact-and-loading","name":"Contact and loading","description":"Relate a proposed physical interaction to the specific finger surface and recorded limits.","findings":[{"id":"proposed-interaction-envelope","name":"Proposed interaction envelope","description":"Specify intended contact, movement and loading while leaving unsupported limits unknown.","questions":[{"text":"Where would the proposed interaction contact the finger, and what force, pressure, movement or duration would it involve?","id":"proposed-interaction-envelope-q01","kind":"action"},{"text":"Which recorded restrictions apply to that surface, joint or task, and what source establishes them?","id":"proposed-interaction-envelope-q02","kind":"provenance"}]}]},{"id":"authorization-and-reassessment","name":"Authorization and reassessment","description":"Connect permission and changing finger state to action decisions.","findings":[{"id":"action-readiness","name":"Action readiness","description":"Record whether a proposed interaction may proceed and what unresolved information prevents a decision.","questions":[{"text":"Has the person authorized this specific finger interaction, and can they communicate withdrawal or discomfort during it?","id":"action-readiness-q01","kind":"action"},{"text":"What missing evidence or change in finger condition requires pausing the interaction or obtaining an appropriate assessment?","id":"action-readiness-q02","kind":"action"}]}]}]},{"id":"evidence-and-external-alignment","name":"Evidence and external alignment","description":"What the world already says about this thing, gathered so the model can be checked against it.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-kinds","name":"Kinds and varieties","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these kinds and varieties hold for the sense of finger this model covers, and on what evidence?","id":"evidence-kinds-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of finger this model covers, and on what evidence?","id":"evidence-identifiers-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Describe finger anatomy for teaching.","Use fingerprints for identification only with consent or legal authority.","Give first aid guidance for finger injuries and urge medical care when needed."],"mustNot":["Collect or store fingerprints without consent or lawful basis.","Operate machines where hands can be caught without guards and safe stops.","Use force on a person's fingers or joints.","Mock people with missing or different fingers."],"requiresHuman":["Treating a severed or crushed finger, which needs urgent medical decision."]},"ethics":{"considerations":["Fingerprints are biometric data that identify people for life.","Hand injuries can end livelihoods."],"affectedParties":["Workers using machines","People whose fingerprints are collected","Patients"]},"owners":{"steward":"For a human finger, the person whose body it is; for a non-human animal's finger, the responsible keeper or wildlife custodian where applicable.","roles":[],"masterSystems":[]},"relations":[{"target":"Q34583","type":"parent","note":"registry parent class"},{"target":"Q66516309","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.finger","Wikidata: Q620207 (https://www.wikidata.org/wiki/Q620207)"]},"properties":{"applicability":"required","items":["Digit identity: thumb | index | middle | ring | little | additional digit | indeterminate","Hand association: associated hand reference; left | right | indeterminate","Attachment and extent: attachment: attached | partially attached | detached | unknown; extent described by observed landmarks","Finger dimensions: length and circumference in mm, with landmarks, posture and measurement method","Joint movement: degrees by identified joint and movement direction, distinguishing active from passive assessment","Local surface condition: observed skin, pad and nail condition, including location, time and visibility limitations","Reported sensation and discomfort: person-reported location, sensation, severity scale if used, trigger and time; unknown when not assessed","Demonstrated task contribution: task reference with finger role, contact location, assistance and observed outcome","Interaction restrictions: per-action restrictions with source, applicable conditions and review time"]},"recognition":{"applicability":"required","items":["A finger is a jointed digit at the end of a tetrapod hand, with external form varying by species.","A nail or claw and a fingertip pad may be present, but human-like nails and ridged pads are not universal identifying features."]},"capabilities":{"applicability":"required","items":["Locate and label the finger and its visible parts within a hand observation.","Track local appearance, dimensions and reported symptoms across comparable observations.","Describe demonstrated bending, straightening and digit-specific movement.","Record the finger's contribution to pointing, touching, tapping, pinching or grasping.","Assess contact and fit requirements for a related glove, ring, sensor or support.","Gate proposed contact, movement or loading against consent, recorded restrictions and unresolved condition."]},"hazards":{"applicability":"required","items":["Crush and amputation injuries from machines and doors.","Frostbite and infection of fingertips."]},"interfaces":{"applicability":"required","items":["The International Organization for Standardization issues ISO 7250-1, which defines basic human body measurements for technological design, including finger measurements.","The World Health Organization issues the International Classification of Functioning, Disability and Health, which includes categories for hand structure and fine hand use."]},"context":{"applicability":"required","items":["Fingers are used in grasping, manipulating objects, communicating through gestures and sensing contact.","Their dimensions and movement are assessed in ergonomics, rehabilitation and the design of tools, gloves and assistive devices."]}},"sources":[{"title":"Anatomy of the Human Body: The Hand","url":"https://www.bartleby.com/lit-hub/anatomy-of-the-human-body/3d-the-hand-1","note":"Classical osteology of metacarpals and phalanges; naming of the five digits."},{"title":"Wikidata item Q620207: finger","url":"https://www.wikidata.org/wiki/Q620207","note":"identity and sense of the item"},{"title":"Wikipedia: Finger","url":"https://en.wikipedia.org/wiki/Finger","note":"general description of the item"}],"openQuestions":["Does the registry intend finger to include the thumb and non-human hand digits, or should either be covered through a neighbouring model?","What proximal anatomical boundary should define a finger consistently for measurements and ownership of shared hand structures?","How should congenital variation, joined digits, partial absence and reattachment affect digit identity and model boundaries?","Which measurement and assessment protocols provide comparable evidence for finger movement, sensation and task contribution?","Which authoritative sources should establish task-specific interaction limits and reassessment criteria without treating observed capability as proof of safety?"],"resources":{"spec":"/models/things/publications/thing-q620207/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q620207/spec.json"],"providers":["Codex","Grok"],"researchStatus":"unreviewed","generatedAt":"2026-09-07T11:37:34Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T12:16:33+00:00: completeness 1.00; sense: Wikidata description; 3 live sources; review by codex: pass"},"score":1.0}}