How to Start Using Passkeys Without Locking Yourself Out: FAQs

Passkeys are becoming a practical replacement for passwords on many major apps and websites. They can make sign-in faster, but the bigger benefit is security: a passkey is designed to work only with the real service it was created for, which makes it much harder for a fake login page to steal.

This FAQ explains how to start using passkeys carefully, which accounts to prioritize, and what to check before you remove older sign-in methods.

What is a passkey?

A passkey is a sign-in credential based on FIDO standards. The FIDO Alliance describes passkeys as credentials tied to a user’s account on a website or application, approved with the same unlock method used on a device, such as a PIN, fingerprint, face scan, or pattern.

In simple terms, the app or website keeps one part of the credential, and your device or password manager keeps the private part. When you sign in, your device proves it has the right private key without sending that key to the website.

That is different from a password. A password is a shared secret: you know it, and the service verifies it. If you type it into a fake page, the attacker can reuse it. A passkey is built so the proof is bound to the legitimate website or app.

Why are passkeys safer than passwords and SMS codes?

Passwords can be guessed, reused, leaked in data breaches, or captured by phishing pages. SMS codes and some one-time codes are better than passwords alone, but they can still be intercepted, tricked out of a user, or abused during account recovery.

The U.S. Cybersecurity and Infrastructure Security Agency says FIDO/WebAuthn authentication is the only widely available phishing-resistant authentication. NIST’s digital identity guidance also makes the key distinction clearly: passwords are not phishing-resistant.

Passkeys do not solve every account security problem, but they reduce one of the most common failure points: typing reusable secrets into the wrong place.

Which accounts should I enable passkeys on first?

Start with the accounts that can unlock the rest of your digital life:

• Your primary email account
• Your password manager
• Your Apple, Google, Microsoft, or device ecosystem account
• Banking, payment, tax, payroll, and investment accounts
• Social media or messaging accounts used for business or public identity
• Cloud storage accounts that hold identity documents, contracts, or backups

Your email account deserves special attention because it often receives password reset links. If an attacker controls your email, they may be able to reset other accounts even if those accounts are otherwise strong.

Do I need special hardware?

Usually, no. Many phones, laptops, tablets, browsers, and password managers can store passkeys. Some people also use physical security keys, especially for work, administrators, journalists, activists, finance teams, and other higher-risk users.

The right choice depends on your risk and recovery needs. A synced passkey stored through a major device or password-manager account can be convenient because it follows you to approved devices. A physical security key can be very strong, but you need a backup key and a safe recovery plan because losing the only key can lock you out.

How do I set up a passkey without breaking my account access?

Use a staged approach:

1. Sign in from a trusted device using the normal method.
2. Open the account’s security or sign-in settings.
3. Add a passkey and approve the setup with your device unlock method.
4. Sign out, then test the passkey sign-in before changing anything else.
5. Add a second trusted device or backup method where the service allows it.
6. Save recovery codes in a secure place if the account provides them.
7. Only then consider removing weaker options such as SMS sign-in.

Do not make several security changes at once. If you add a passkey, change your password, remove a phone number, and replace recovery email settings in one session, it becomes harder to troubleshoot if something fails.

Should I delete my password after adding a passkey?

Not immediately. Some services still keep passwords as a fallback even after a passkey is added. Others allow passwordless mode. Before removing a password or disabling older methods, confirm that you can sign in from the devices and browsers you actually use.

If a service still requires a password, make it long, unique, and stored in a password manager. The FTC’s account security guidance recommends two-factor authentication because passwords alone are not enough for important accounts.

The practical goal is not to rush into a passwordless setup everywhere. The goal is to make your most important accounts harder to phish while keeping legitimate recovery possible.

Are synced passkeys safe?

Synced passkeys can be safe, but they shift some responsibility to the account that syncs them. If your passkeys are stored in a cloud-backed password manager or device ecosystem, protect that account carefully.

Use a strong unlock method, keep devices updated, remove old devices you no longer control, and turn on the strongest available multi-factor authentication for the sync account itself. NIST’s supplementary guidance on syncable authenticators notes that cloud-based recovery processes can become a weakness if they are not protected well.

If you are a high-risk user, consider keeping at least one hardware security key as a backup for your most important accounts.

What happens if I lose my phone or laptop?

The answer depends on where the passkey is stored. If it is synced through your device ecosystem or password manager, you may be able to restore it after signing in to that account on a replacement device. If it is stored only on one physical security key or one device, losing that item may be more serious.

Before relying on passkeys, check each critical account for recovery options:

• Can you add more than one passkey?
• Can you register both a phone and a laptop?
• Can you add a hardware security key?
• Are recovery codes available?
• Is the recovery email current and secure?
• Is your phone number still needed, and is it protected against SIM swap risk?

Recovery should be planned before an emergency, not during one.

Can a scammer still trick me after I use passkeys?

Yes, just in different ways. Passkeys reduce phishing risk during sign-in, but scammers may still try to trick you into approving a device prompt, changing recovery settings, sharing a screen, installing remote access software, moving money, or revealing personal information.

Be cautious when a caller, text message, email, or support chat tells you to “verify” your account urgently. Go to the service by typing the address yourself or using the official app. Do not follow sign-in links from unexpected messages.

What if a website does not support passkeys yet?

Use the strongest option it offers. Prefer an authenticator app, security key, or app-based approval over SMS when available. Use a unique password stored in a password manager. Keep recovery email addresses and phone numbers current, but avoid treating phone numbers as your only protection for important accounts.

For work accounts, ask administrators whether phishing-resistant MFA is available. CISA urges organizations to plan a move toward FIDO-based authentication because it is more resistant to common phishing attacks than passwords and one-time codes.

What should I check every few months?

Review your important accounts the same way you would review bank statements:

• Passkeys and security keys you recognize
• Devices currently signed in
• Recovery email addresses and phone numbers
• Backup codes and where they are stored
• Recent security alerts
• Apps or services connected to the account
• Passwords that are reused, weak, or still exposed in breach alerts

Remove old devices and recovery options you no longer control. Keep at least two safe ways back into critical accounts. A strong sign-in method is only useful if the recovery path is also secure.

What is the simplest safe starting plan?

Pick one high-value account, such as your primary email account, and add a passkey from a device you use every day. Test it. Add a backup method. Then repeat the process for your password manager, device ecosystem account, and financial accounts.

Move gradually, keep recovery records secure, and avoid deleting fallback methods until you have confirmed that passkey sign-in works in normal conditions. That approach gives you the security benefit of passkeys without creating a preventable lockout.