How Passkeys and Passwordless Login Work Explained 4K Vertical - 4K 影片檔

A website sends a random challenge, the phone unlocks with a fingerprint and signs it with a private key that never leaves the device, and the website checks the signature with the matching public key before signing the user in. Public key cryptography made simple, dark navy theme, generic labels. Vertical 9:16 cut, laid out for social and mobile placements.