Passkeys, as defined by WebAuthn, are an authentication standard that uses asymmetric cryptographic keys to authenticate users instead of passwords. This method is more secure than traditional password-based login systems, as it eliminates the risk of password compromise and phishing attacks. Passkeys require users to authenticate using their devices without having to remember or store passwords, making them easier to use while providing enhanced security benefits. The process involves registering a user's device with a server, creating a unique challenge key for authentication, and then verifying the user's identity through a cryptographic signature. This standard is part of the FIDO2 specification and has become widely adopted in modern web applications, offering a smooth authentication experience for users while preventing cyberattacks.