Assessing Passkey Security: Benefits and Limitations
🔐 Passkeys replace passwords with public-key cryptography, keeping the private key on the user’s device while services retain only a public key. They prevent phishing, credential stuffing, and brute-force attacks, and are unlocked by local authentication such as biometrics or a PIN. FIDO research and high-profile moves by Microsoft and Aflac highlight improved convenience and reduced support costs, but device dependency, legacy compatibility, and implementation costs remain significant challenges.
