Authentication is the process of verifying the identity of a user or device, often as a condition for granting access to a system's features or transactions. In cryptocurrency transactions, it ensures that the payment is initiated by a legitimate source, adding an essential layer of security.


In the domain of crypto payments, authentication mechanisms, such as two-factor authentication (2FA) or biometric verification, are crucial for preventing unauthorized access to funds and ensuring that transactions are conducted securely and reliably.