Passwords fail for reasons that are now structural, not accidental.
Even a well-hashed password is still a shared secret. If the user types it into the wrong page, the attacker wins before your backend gets a chance to prove how carefully it stores credentials.
Passkeys matter because they change that model.
Why WebAuthn Is Different
With WebAuthn, the browser and authenticator participate in a public-key flow. The server stores a public key. The user device holds the private key. The credential is also bound to the relying party origin, which makes phishing much harder.
That means a convincing fake domain cannot simply trick the user into revealing a reusable secret the way a password flow can.
What Registration Looks Like
At a high level:
- the server sends a challenge
- the browser asks the authenticator to create a credential
- the authenticator returns public-key material and attestation data
- the server stores the credential metadata
On sign-in, the server sends a fresh challenge and verifies the signed response.
What Teams Still Need to Design
Passkeys are not "security solved." Teams still need:
- account recovery
- multi-device expectations
- good credential management UX
- fallback paths that do not quietly reintroduce the original weakness
That last part is where a lot of implementations fail. A strong passkey flow with a weak fallback email reset flow still has a weak account system.
Better Product Positioning
The best framing is not "passwords are dead tomorrow." It is:
Passkeys are the most promising mainstream path away from phishing-prone shared-secret login flows.
That is already a big shift.
Further Reading