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  2. Authorization hold - Wikipedia

    en.wikipedia.org/wiki/Authorization_hold

    Authorization hold (also card authorization, preauthorization, or preauth) is a service offered by credit and debit card providers whereby the provider puts a hold of the amount approved by the cardholder, reducing the balance of available funds until the merchant clears the transaction (also called settlement), after the transaction is completed or aborted, or because the hold expires.

  3. Online authorisation - Wikipedia

    en.wikipedia.org/wiki/Online_authorisation

    Online Authorization (OLA) is a system used to verify a transaction on a payment card (e.g. credit card). [1] The term 'on-line' refers to the real-time nature of the verification. In other words, if the account is overdrawn, in most cases, the transaction will be refused.

  4. Claims-based identity - Wikipedia

    en.wikipedia.org/wiki/Claims-based_identity

    If the membership card makes the claim that the patron is a VIP, then the club can react accordingly, translating the authenticated VIP membership claim to a permission such as the patron being permitted to sit in the exclusive lounge area and be served free drinks. Note that not all uses of the term "authentication" include claims acquisition. [3]

  5. Data analysis for fraud detection - Wikipedia

    en.wikipedia.org/wiki/Data_analysis_for_fraud...

    Bayesian learning neural network is implemented for credit card fraud detection, telecommunications fraud, auto claim fraud detection, and medical insurance fraud. [ 13 ] Hybrid knowledge/statistical-based systems, where expert knowledge is integrated with statistical power, use a series of data mining techniques for the purpose of detecting ...

  6. Credit card fraud - Wikipedia

    en.wikipedia.org/wiki/Credit_card_fraud

    A fake automated teller slot used for "skimming". Credit card fraud is an inclusive term for fraud committed using a payment card, such as a credit card or debit card. [1] The purpose may be to obtain goods or services or to make payment to another account, which is controlled by a criminal.

  7. Overdraft - Wikipedia

    en.wikipedia.org/wiki/Overdraft

    Authorization holds – When a customer makes a purchase using their debit card without using their PIN, the transaction is treated as a credit transaction. The funds are placed on hold in the customer's account reducing the customer's available balance.

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