Passwordless authentication is a form of authentication that verifies a user’s identity without the use of passwords. There are many forms of passwordless authentication including, Email, SMS, and more importantly, Passkeys. What are Passkeys? A passkey, also known as a password or passphrase, is a secret word or phrase that is used to gain access to a system or application. Passkeys are typically used as a form of authentication to confirm the identity of a user and to protect sensitive information from unauthorized access.