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HCE
When we talk about HCE methodology, many interacting architectural components come to mind. The core terms describing this architecture are listed below, starting with GCM/FCM (Google/Firebase Cloud Messaging), a service for sending push notifications.
ATM
ATM stands for Automated Teller Machine, an electronic device that lets customers carry out account transactions with or without a card. It was invented in 1960 by John Shepherd-Barron. The first ATM in Turkey was installed in 1982.
ISO 8583
F45 (TRACK-1 DAT) carries the Track 1 data of the card in ISO 7813 format, including field separators and start and end sentinels but excluding the LRC character. It is 76 characters long.
ISO 8583
F41 - CARD ACCEPTOR TERMINAL IDENTIFICATION: the terminal where a transaction took place. An 8-character alphanumeric value generated by the acquirer bank and assigned to the POS, managed as a unique terminal number at the acquirer.
ISO 8583
F2 is the Card Number field in ISO 8583, identifying the cardholder and issuing bank. This post covers its structure, the 8-digit BIN update, field format, first-digit scheme identification, and PCI DSS security requirements.
ISO 8583
F64 — Message Authentication Code (MAC): verifies the origin and text of the message between the sender and the receiver.
ISO 8583
F23 - CARD SEQUENCE NUMBER: Information used to distinguish cards sharing the same card number. For example, the Card Sequence Number is incremented by 1 when a card is renewed. In an authorization transaction, if the F22 value is '05x'...
Credit Card
Technology continues to make our lives easier and more secure. Old ID cards were just laminated paper; new ones became personalized and secure with biometric photos added alongside chip data.