Passkeys are emerging as a secure, passwordless authentication method that leverages public-key cryptography to enhance user privacy and protection against phishing and credential theft. Unlike traditional passwords, which rely on a shared secret stored on a server, passkeys use a unique pair of cryptographic keys: a private key stored securely on the user's device and a public key registered with the service. Authentication involves biometric verification or a PIN, ensuring that sensitive data remains on the user's device. Major tech companies like Apple, Google, and Microsoft have started adopting passkeys for their platforms, acknowledging their potential to simplify user experiences and improve security. However, challenges such as cross-device compatibility and implementation complexity for developers remain. Despite these hurdles, passkeys offer a more secure alternative to passwords, eliminating vulnerabilities like weak passwords and susceptibility to phishing. They enable seamless multi-factor authentication (MFA) and maintain user privacy by ensuring biometric data never leaves the device. As adoption grows, tools and platforms like Descope are making it easier for developers to integrate passkey authentication into their applications.