debit card
Enable an agent to recognise a debit card, assess its usability and restrictions, and determine which account-linked payment actions are available and authorised.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an agent to recognise a debit card, assess its usability and restrictions, and determine which account-linked payment actions are available and authorised.
A debit card is a payment instrument whose credentials authorize purchases or cash withdrawals charged to a linked deposit or payment account, ordinarily using available funds rather than a separate credit line.
It can be Assess whether a proposed purchase or withdrawal matches the card's supported channels, current status and recorded limits.; Guide or perform activation, freezing and unfreezing through an authorised issuer interface when permitted.; Identify which physical credential or wallet token should be suspended or replaced after loss or compromise.; Explain a declined transaction using available issuer evidence while separating confirmed causes from hypotheses.; Route a disputed transaction to the relevant issuer process with card and transaction references.; Track expiry and replacement dependencies affecting wallet provisioning and recurring payments..
Distinguishing features
Its funding arrangement directs transactions to a linked deposit or payment account rather than primarily creating debt on a card credit account; attached overdraft arrangements must be recorded separately.
Classification depends on the issuer's funding arrangement, not the network logo, card appearance or a terminal's debit-versus-credit routing label.
It supports purchases as a payment card; a credential restricted to cash-machine access needs separate classification or an explicit boundary decision.
A physical card, virtual credential and wallet token may represent access to the same debit instrument without being interchangeable identifiers.
Authorisation and account posting can occur at different times, so immediate ledger deduction is not a required recognition test.
Scope
+ Identification of the issued debit instrument, its issuer, cardholder and linked funding account
+ Physical cards, virtual credentials and associated wallet tokens
+ Supported purchase, withdrawal and verification methods
+ Card status, expiry, replacement and credential lifecycle
+ Card-specific spending controls, acceptance restrictions and transaction permissions
+ Card-level evidence needed to investigate failed, disputed or unauthorised use
- The funding account's ledger, ownership structure and general banking services
- Credit cards and their revolving credit agreements
- Prepaid instruments funded through a separate stored-value arrangement
- Merchant acquiring systems and payment-network operations as independent systems
- The complete lifecycle and accounting of individual payments
- General identity records and banking customer relationships
Characteristics
- Funding relationship
- Reference to linked funding account or accounts, with selection rules Establishes what funds the instrument can access and distinguishes it from credit and prepaid arrangements.
- Issuer and authorised holder
- Issuer reference, holder reference and holder's authority over card use Separates possession of a credential from authority to spend account funds.
- Credential embodiment
- Physical card, virtual card credential, associated wallet token or combination Determines which presentation methods exist and which credential a control or incident concerns.
- Instrument and credential status
- Issuer-reported status such as pending activation, active, frozen, blocked, expired or cancelled, recorded separately for each credential A usable underlying card does not establish that every associated credential is usable.
- Validity period
- Issuer-provided start date where applicable and expiry month/year Supports expiry checks and replacement planning without assuming that expiry closes the funding account.
- Transaction capabilities
- Issuer-confirmed support for purchases, cash withdrawals, recurring payments, online use and other specified transaction types Prevents the agent from inferring capabilities solely from the card's debit classification.
- Presentation and verification methods
- Supported combinations of chip, contactless, magnetic stripe, remote credential use, PIN and other issuer-supported verification Determines whether a proposed transaction can meet the applicable presentation and verification requirements.
- Card-specific limits
- Amount and currency or transaction count, with transaction type, time window and reset rule Available account funds alone do not establish permission to make a particular payment or withdrawal.
- Usage restrictions
- Allowed or blocked channels, regions, merchant categories and transaction types, with effective times Explains whether otherwise supported use is currently permitted.
- Overdraft interaction
- Reference to applicable account overdraft arrangement, or none or unknown Avoids assuming that debit-card use can never take an account below zero.
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 5 bundles · 9 layers · 17 findings · 30 questions.
Debit identity and funding Establishes which debit instrument is being modelled, whose authority it carries and which account relationship funds its use.
The defining property of a debit card is its account-linked payment arrangement, not its physical form or branding.
Instrument classification
Tests the debit-card classification against neighbouring payment instruments.
Funding basis
Record issuer evidence for the funding arrangement and distinguish it from credit-card borrowing, prepaid value and cash-access-only credentials.
- What issuer record establishes that this instrument is a debit card linked to a deposit or payment account? definition
- Does this product combine debit with credit, prepaid or cash-access-only functions that require separate modelling? boundary
Holder and account links
Connects the card to its issuer, authorised holder and funding accounts without absorbing their models.
Spending authority
Record the holder's card-use authority, account-selection rules and any linked overdraft arrangement as distinct relationships.
- Which account funds each supported transaction type, and can the holder select between accounts? definition
- What evidence establishes the holder's authority to use the card and the agent's authority to act on the holder's behalf? provenance
- Which overdraft terms must be consulted when assessing a payment that may exceed available funds? boundary
Card credentials and presentation Describes how the debit instrument is represented and presented across physical, remote and wallet channels.
A card can have several related credentials whose identifiers, acceptance and suspension behaviour differ.
Credential topology
Maps physical cards, virtual credentials and wallet tokens to their underlying instrument.
Credential linkage
Maintain safe references linking credentials to the debit instrument, including device association and replacement lineage where known.
- Which physical cards, virtual credentials and wallet tokens represent this debit instrument? definition
- Which issuer or wallet evidence confirms these links without requiring storage of PINs, security codes or full card numbers? provenance
Presentation and verification
Records supported transaction interfaces and their verification requirements.
Channel and verification fit
Assess capability for the actual credential, terminal or remote channel rather than inferring acceptance from a network logo.
- Which chip, contactless, magnetic-stripe, online and wallet presentation methods are supported by this credential? definition
- What verification or step-up authentication does the issuer require for the proposed use, and can the authorised holder complete it? action
Debit use and authorisation Assesses purchase and withdrawal eligibility using card controls, funding evidence and transaction context.
A debit card's usable spending capacity depends on more than the account balance, and eligibility checks cannot guarantee approval.
Capabilities and controls
Captures transaction permissions, limits and restrictions that apply specifically to card use.
Transaction eligibility
Evaluate the proposed transaction against supported uses and effective controls, keeping issuer-enforced limits distinct from user-selected restrictions.
- Are purchases, cash withdrawals, recurring payments and cross-border or online use enabled for this card? definition
- What amount or count limits apply, in which currency and time window, and how much capacity remains according to current evidence? measurement
- Who may change the relevant restriction, and through which authorised issuer action? action
Authorisation and posting
Relates card authorisation to account availability and later payment processing without owning the payment ledger.
Funding and decision evidence
Separate available-funds observations, authorisation holds, issuer decisions and final posting; retain the source and time of each observation.
- What current account evidence is available about spendable funds and holds relevant to the proposed card transaction? measurement
- For a decline or unexpected debit, which issuer response and payment records establish what happened? provenance
- Which questions about capture, reversal, settlement or final charges belong to the payment or account model? boundary
Card lifecycle and recovery Tracks activation, suspension, expiry and replacement alongside responses to loss, compromise and disputed use.
Card interventions can affect physical credentials, wallet tokens and continuing payment arrangements differently.
Status and replacement
Maintains instrument and credential states and their issuer-defined transitions.
Lifecycle transition effects
Record effective status and validity separately for the instrument and each credential, including the consequences of replacement.
- What are the issuer-reported status and expiry of the card and each associated credential? measurement
- Which authorised activation, freeze, unblock, cancellation or replacement actions are available from the current state? action
- What issuer evidence establishes how replacement affects wallet tokens and recurring payment credentials? provenance
Loss, compromise and disputes
Supports targeted containment and evidence-based routing of reported card misuse.
Incident response scope
Identify affected credentials and transactions, record protective actions and consult applicable issuer procedures without assuming universal reimbursement rights.
- Does the report concern physical loss, exposed card details, a compromised wallet token or a disputed transaction? definition
- Which issuer-supported action addresses the affected credential, and what does that action leave usable? action
- Which applicable issuer terms and jurisdiction-specific rules establish the reporting procedure, deadlines and dispute treatment? provenance
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- This describes the financial payment-instrument sense; the supplied domain code should not imply that the card is a creative work.
- Standards are named from recall; their applicable editions and implementation requirements need verification.
- Deferred debit classification and the boundary between debit and prepaid products vary by market; overdraft access means debit does not always guarantee spending only existing funds.
- Which of these check these first hold for the sense of debit card this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Consumer debit card
- Business debit card
- Virtual debit card
- Deferred debit card
- Which of these kinds and varieties hold for the sense of debit card this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Primary account number (PAN), ISO/IEC 7812 - A numeric identifier of up to 19 digits containing an issuer identification number, an individual account identifier and a check digit - Identifies the card account within the numbering scheme; it is not necessarily the linked bank account number and should be protected.
- Issuer identification number (IIN), ISO/IEC 7812 - Leading 8 digits of the PAN; legacy 6-digit assignments also exist - Also commonly called a bank identification number (BIN); identifies an issuer allocation rather than an individual cardholder.
- Which of these identifiers and schemes hold for the sense of debit card this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- ISO/IEC 7810, issued by ISO and IEC, specifies identification-card physical characteristics, including the ID-1 format.
- ISO/IEC 7812, issued by ISO and IEC, specifies identification-card issuer numbering and registration.
- ISO/IEC 7816, issued by ISO and IEC, specifies integrated-circuit cards with contacts and associated interfaces.
- EMV specifications, maintained by EMVCo, define interoperable chip-based payment technologies.
- Payment Card Industry Data Security Standard (PCI DSS), maintained by the PCI Security Standards Council, specifies security requirements for environments handling payment account data.
- Which of these standards and regulation hold for the sense of debit card this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Paying merchants at physical points of sale.
- Making online and recurring payments where supported.
- Withdrawing cash from automated teller machines.
- Obtaining cash back with a purchase where merchants and payment arrangements support it.
- Funding mobile-wallet payments through provisioned card credentials or payment tokens.
- Which of these real-world use hold for the sense of debit card this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Nominal physical dimensions of an ID-1 card - 85.60 × 53.98 - mm
- Nominal thickness of an ID-1 card - 0.76 - mm
- Which of these typical measurements hold for the sense of debit card this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Stolen cards or compromised credentials can enable unauthorized payments or withdrawals.
- Skimming, phishing and PIN compromise can expose cardholder credentials.
- Insufficient available funds, account restrictions or transaction limits can cause declines.
- Authorization holds can temporarily reduce spendable funds before a transaction settles or is reversed.
- Damaged cards, terminal faults or network outages can prevent transactions.
- Which of these failure modes and hazards hold for the sense of debit card this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Domestic debit networks and international card networks differ in acceptance, routing and authentication practices.
- Some markets distinguish immediate debit from deferred debit, in which accumulated transactions are charged to the linked account later.
- Consumer liability, dispute rights, overdraft treatment and fees depend on jurisdiction and account terms.
- Which of these regional variation hold for the sense of debit card this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Credit card - Ordinary purchases draw on a credit facility rather than directly charging a linked deposit or payment account.
- Prepaid card - Spending draws on value loaded in advance into a prepaid arrangement rather than an ordinary linked deposit account.
- ATM card - An ATM-only card supports cash-machine account access without general merchant-payment functionality.
- Bank account - The account holds funds and records balances; the debit card is an instrument for accessing it.
- Payment token - A token substitutes for underlying payment credentials in a defined context; it is not itself the linked account or physical card.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of debit card this model covers, and on what evidence? provenance
What the second pass must settle
- Does the existing Vercy catalogue already contain a payment-card or debit-card model that should supply the shared structure or serve as the single source of truth?
- How should the registry boundary treat hybrid debit/credit products, prepaid cards marketed as debit and cards restricted to cash-machine access?
- For the intended issuers, which status changes propagate between the underlying card, physical credentials, virtual credentials and wallet tokens?
- Which issuer and jurisdiction sources establish applicable limits, authentication requirements, overdraft interactions and dispute procedures?
- Which authorised integrations expose sufficiently current status, limit and funding evidence, and what freshness threshold should an agent require before acting?