Passkeys are a new way of logging in to online accounts that's designed to be faster, easier to use and more secure than passwords. They rely on public-key cryptography to verify identity rather than a username and password, making them vulnerable to phishing and other scams less likely. Passkeys were created by the FIDO Alliance, a group of major companies including Apple, Google, Microsoft, and Amazon. They work by creating a unique pair of mathematically related keys, one stored securely on your device and the other publicly shared with the service. This allows for seamless login without sensitive information changing hands. While passkeys are gaining support from major companies like Google, Microsoft, and Apple, they still have limitations, such as cross-device authentication issues and the need for websites and apps to implement passkey support. Despite these challenges, passkeys promise a more secure alternative to passwords and may eventually become the standard for important accounts.