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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 card

Card enabling the holder to have his purchases directly charged to funds on his account at a deposit-taking institution (may sometimes be combined with another function, eg that of a cash
card or cheque guarantee card).