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D
Data Encryption Standard (DES)
Debit advice
Debit card
Debit transfer system
Decipherment
Default
Defaulter pays
Deferred net settlement system
Delivery
Delivery-versus-payment system
Denial of service
Depository
Deterrent measures
Digital signature
Direct debit
Domestic settlement
Debit transfer system

A funds transfer system in which debit collection orders made or authorised by the payer move from (the bank of) the payee to (the bank of) the payer and result in a charge (debit) to the account of the payer; for example, cheque-based systems are typical debit transfer systems.