Term

Description

ACE

Agnos Certification Environment

AFS

Agnos Framework Services

API

Application Programmable Interface

CL

Contactless

CT

Contact

DDA

Dynamic Data Authentication. One of the two EMV ODA methods

ICS

Implementation Conformance Statement

fDDA

Fast Dynamic Data Authentication. A Visa specialization of the DDA. The term fast lies on the fact that it is a DDA that is performed at Get Processing Option APDU exchange time without requiring an Internal Authentication APDY exchange

HAL

Hardware Abstraction Layer

L2

Card processing

L3

Payment application

LoA

Letter of Approval granted after a successful TA

ODA

Offline Data Authentication

OLA

Open L2 API

POI

Point of Interaction. Synonym: POP

POP

Point of Payment. Synonym: POI

POS

Point of Sales

RAM

Rapid Access Memory

SDA

Static Data Authentication. One of the two EMV ODA methods

TA

Terminal Approval

TMS

Terminal Management System

UI

User Interface