Ask anyone who runs a customer portal what fills their support queue and "I can't log in" will be at or near the top. Forgotten passwords, expired passwords, locked accounts, reset emails stuck in spam. Then ask the security team what keeps them up at night. You'll hear about the same system from the other side: reused passwords, credential stuffing, phishing.
Passwords manage to be the most annoying part of the user experience and the weakest part of the security model at the same time. Passkeys fix both, and they've reached the point where adding them to a customer-facing app is a sensible default rather than an experiment.
What a passkey is
A passkey is a credential based on public-key cryptography, built on the WebAuthn and FIDO2 standards. When a user creates one, their device makes a key pair. The private key never leaves the device and is protected by the device's own unlock, whether that's a fingerprint, a face scan or a PIN. Your server only ever stores the public key.
At sign-in, your server sends a challenge, the device signs it once the user unlocks it, and the server checks the signature. From the user's side, they tap "Sign in" and glance at their phone. There's no password to remember, type or reset.
Passkeys sync between a person's devices through their platform's credential manager, such as iCloud Keychain or Google Password Manager, and plenty of third-party password managers handle them too. Syncing is what made passkeys workable for ordinary consumers, because losing your phone no longer means losing your account.
Safer, and not only more convenient
The big one is phishing. A passkey is tied to your website's domain, so if someone is tricked onto a lookalike site, their device has no passkey for that domain. There's nothing for them to type in and nothing to steal.
There's also nothing reusable to leak. Your database holds public keys, which are no use to an attacker, so a breach of the user table doesn't hand anyone a credential that works elsewhere. Credential stuffing stops working too, since there are no passwords to replay from other sites' breaches.
And you get a second factor built in. The passkey is something the user has (the device), unlocked by something they are or know (a fingerprint or PIN). That's strong authentication without an SMS code.
The rollout is the hard part
Mature libraries and the browsers themselves take care of the cryptography, and adding passkey registration and sign-in to an existing app is a modest job. The decisions that need care are about product and support.
Offer passkeys alongside passwords first
Don't force anyone to switch on day one. Make passkeys an option and suggest creating one at a natural moment, like right after a successful password sign-in or a password reset, when the pain of passwords is fresh. A one-tap "Create a passkey for faster sign-in next time" will do far better than a settings page nobody visits.
Use autofill-style sign-in
Browsers support a mode usually called conditional UI. When the user taps the username field, their passkeys show up in the same autofill list as saved passwords. Nobody has to understand what a passkey is. They pick their account from a familiar list and unlock their phone, and that small detail makes a big difference to uptake.
Take account recovery seriously
Recovery is the toughest question. If someone loses every device and their synced credentials with them, how do they get back in? Whatever your answer is (a verified email link, an identity check, a call to support), that path becomes the weakest point in your security, because that's where attackers will go. Make it strong, and log and alert on every use.
Allow for shared and managed devices
Some people sign in from a shared family tablet, a locked-down work laptop or a kiosk where they can't or shouldn't save a passkey. Let them sign in with the passkey on their phone by scanning a QR code, and keep a fallback for these cases.
Brief your support team
Your help desk will get "what's this passkey thing?" and "I've got a new phone, now what?" A short internal guide and a couple of clear help articles stop a new kind of ticket from replacing the old one.
Where to start
If your portal runs on a modern identity platform, check whether passkey support is already there waiting to be switched on. Many platforms have added it. If your authentication is custom-built, a passkey layer can usually go in without disturbing the existing password flow.
Then measure. Track how many users create passkeys, how sign-in success compares between passkeys and passwords, and what happens to password-reset tickets over the next few months. Those numbers make the case for the next step, which might one day be making passwords optional for new accounts.
It's rare for a security improvement to be one that users prefer, and passkeys are one. If you'd like help adding them to your portal, recovery flow and all, talk to us.
