ISO 9564-4:2016

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ISO 9564-4:2016 is an international standard that provides requirements for using Personal Identification Numbers (PINs) in e-commerce, particularly for financial transactions. It specifies minimum security requirements and practices for handling PINs and PIN entry devices in online and other electronic commerce environments. The standard focuses on PINs used for card-based financial transactions, such as those used at ATMs, POS terminals, and online payment systems.