A passkey is a modern digital credential designed to replace traditional passwords for online accounts. It uses a pair of cryptographic keys - one public and one private - to securely verify your identity when you log in. The private key stays safely on your device, while the public key is shared with the service you’re accessing. This approach makes passkeys more secure and convenient, as they are resistant to phishing attacks and do not require you to remember complex passwords. Passkeys are often managed through your device’s authentication methods, like fingerprint or facial recognition, further enhancing security and ease of use.