Use a passkey whenever a service supports one and you have confirmed how its recovery works. A passkey is a FIDO credential built from a cryptographic key pair; a password is a reusable secret that you type or autofill. Passkeys are designed to resist phishing and password reuse, but access still depends on your devices, credential provider and the service’s recovery options. Passwords remain necessary on sites that have not adopted passkeys or when you cannot reach your passkey.
What is a passkey?
A passkey is an authentication credential based on FIDO standards. During registration, your authenticator creates a public-key/private-key pair. The service stores the public key; the private credential remains with the authenticator or an approved credential provider. You do not copy the private credential into a form or send it as text during sign-in. FIDO describes passkeys as usable on a phone, computer or hardware security key, with the same local action you use to unlock that device, such as a biometric, PIN or pattern (FIDO Alliance overview).
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A password works differently. You choose a text secret and provide it to a service, usually by typing it or allowing a password manager to autofill it. The service verifies the supplied secret. If the password is reused, stolen or entered into a convincing imitation of the real site, an attacker may be able to try it elsewhere.
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The face or fingerprint prompt you see when using a passkey is not the passkey sent to the website. It authorizes the local authenticator to use the private credential. The biometric, PIN or pattern stays in the device’s unlock system rather than becoming a website password (Apple’s passkey explanation).
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- WORKS WITH 1000+ ACCOUNTS: Compatible with popular accounts like Google, Microsoft, and Apple. A single YubiKey 5C NFC secures 100+ of your favorite accounts, including email, password managers, and more
- FAST & CONVENIENT LOGIN: Plug in your YubiKey 5C NFC via USB and tap it, or tap it against your phone (NFC), to authenticate. No batteries, no internet connection, and no extra fees required
- MOST SECURE PASSKEY: Supports FIDO2/WebAuthn, FIDO U2F, Yubico OTP, OATH-TOTP/HOTP, Smart card (PIV), and OpenPGP. That means it’s versatile, working almost anywhere you need it
- PRIMARY & SPARE KEYS: Just like having a spare house key, we recommend buying two YubiKeys - one for daily use and one as a spare. That way you’ll never get locked out of your accounts
How passkey and password sign-ins differ
Password sign-in
- You enter a username and password at a service.
- The service checks the supplied secret against its password-verification data.
- If the same password has appeared in a breach or is reused on another site, an attacker can attempt it against those accounts.
A password manager can generate unique passwords and reduce typing, but the underlying credential is still a reusable secret. A fake login page can often collect it because the user is expected to disclose the same text to the legitimate service.
Passkey sign-in
- The service sends a unique cryptographic challenge to the browser or app.
- The authenticator checks that the request belongs to the service for which the credential was registered.
- You approve use of the authenticator with your device unlock method.
- The authenticator signs the challenge with the private credential.
- The service verifies that signature with the public key it saved during registration.
The browser-facing WebAuthn API and the Client to Authenticator Protocol (CTAP) define how this exchange works, including communication with external security keys (FIDO User Authentication Specifications). Because the credential is scoped to the legitimate service context, a lookalike site cannot simply collect a passkey as if it were a password.
Are passkeys safer than passwords?
For phishing and password-reuse threats, passkeys provide a meaningful security advantage. They use a service-specific key pair rather than asking you to disclose a reusable text secret. A stolen password can be tested against multiple sites; a captured passkey sign-in response is not a replacement private key. Passkeys therefore reduce two common attack paths, but they do not make an entire account or recovery process invulnerable. Guidance from Apple and Microsoft describes the phishing-resistant design without claiming that every account risk disappears.
| Decision axis | Passwords | Passkeys | What to do |
|---|---|---|---|
| Phishing | A user can be tricked into typing one into a lookalike site. | Authentication is bound to the legitimate service context. | Prefer a passkey where the service offers it. |
| Reuse and breach exposure | Reused or exposed secrets can be tried against other accounts. | A service-specific key pair is used; the private credential is not disclosed as reusable text. | Use unique passwords and a password manager for services without passkeys. |
| Daily convenience | Requires entry or autofill and remembering a secret if it is not managed. | Usually requires only the device’s unlock action. | Choose a method that works with your devices and accessibility needs. |
| Portability | Can be entered on many devices if you can reach the password or manager. | May sync through a provider or remain tied to one authenticator. | Check access across every device you use. |
| Loss and recovery | Depends on the service’s password-reset process. | Depends on synced copies, another authenticator or the service’s recovery process. | Set up recovery before removing another sign-in method. |
| Availability | Still accepted by many services. | Available only where implemented, with service-specific fallbacks. | Keep a viable fallback where required. |
Synced versus device-bound passkeys
Synced passkeys
A synced passkey is made available on multiple devices through a credential provider’s ecosystem. This can make a replacement phone or a second computer easier to use because the credential is restored through the provider’s account and synchronization system. The trade-off is that access depends on the provider account, its security controls and its support on each operating system or browser. FIDO’s consumer guidance discusses these provider ecosystems and the practical recovery questions they create (FIDO synced-passkey deployment paper, May 31, 2024).
Device-bound passkeys
A device-bound passkey stays with a particular authenticator, such as a phone, computer or external key. It can limit where the private credential exists, which may suit a higher-control threat model, but losing that authenticator can make access harder. You need another enrolled authenticator or a service recovery route before relying on it as your only method.
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- WORKS WITH 1000+ ACCOUNTS: Compatible with Google, Microsoft, and Apple. A single Security Key C NFC secures 100 of your favorite accounts, including email, password managers, and more.
- FAST & CONVENIENT LOGIN: Plug in your Security Key C NFC via USB-C and tap it, or tap it against your phone (NFC) to authenticate. No batteries, no internet connection, and no extra fees required.
- TRUSTED PASSKEY TECHNOLOGY: Uses the latest passkey standards (FIDO2/WebAuthn & FIDO U2F) but does not support One-Time Passwords. For complex needs, check out the YubiKey 5 Series.
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Neither model is automatically best. A person who travels between devices may value synchronization, while an organization with strict hardware-control requirements may prefer device-bound credentials. Evaluate who controls the provider account, how replacement works and whether the service permits additional authenticators. FIDO’s enterprise guidance treats synced and device-bound credentials as choices that must be matched to those requirements (FIDO enterprise deployment introduction).
When to use a passkey
Choose a passkey when all of the following are true:
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- You know which device or credential provider will store or sync it.
- You have tested another way back into the account, such as a second authenticator or a documented recovery method.
- The devices you regularly use support the required browser, operating system and unlock method.
This is especially sensible for email, financial, work and social accounts that attract phishing. Enroll the passkey from the real service domain or its official app, not from a link in an unsolicited message.
When a password is still the right fallback
Use a password when the service has not implemented passkeys, when your current device cannot access the credential, or when the service’s recovery flow still requires one. Generate a different, long password for every account and store it in a reputable password manager. Do not weaken a passkey setup by reusing a short password as the fallback for several services.
Some services may display a passkey option while retaining passwords for recovery or specific account actions. Read the service’s wording carefully: “passwordless” can describe a sign-in experience, while the account may still have a password or another reset method available.
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- WORKS WITH 1000+ ACCOUNTS: Compatible with popular accounts like Google, Microsoft, and Apple. A single YubiKey 5 NFC secures 100+ of your favorite accounts, including email, password managers, and more
- FAST & CONVENIENT LOGIN: Plug in your YubiKey 5 NFC via USB and tap it, or tap it against your phone (NFC), to authenticate. No batteries, no internet connection, and no extra fees required
- MOST SECURE PASSKEY: Supports FIDO2/WebAuthn, FIDO U2F, Yubico OTP, OATH-TOTP/HOTP, Smart card (PIV), and OpenPGP. That means it’s versatile, working almost anywhere you need it
- PRIMARY & SPARE KEYS: Just like having a spare house key, we recommend buying two YubiKeys - one for daily use and one as a spare. That way you’ll never get locked out of your accounts
Do you need a hardware security key?
No. A phone or computer that supports passkeys is enough for many users. An external FIDO2 security key is an optional authenticator for people who want a physically separate credential, need a hardware-key policy, or must sign in on systems where their usual phone is unavailable. FIDO specifications describe external authenticators connecting over USB, NFC or Bluetooth Low Energy (FIDO specifications).
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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesBefore buying a key, verify the exact account, operating system, browser, connection type and enrollment limit. A key that works over USB may not meet a phone’s NFC or Bluetooth requirements. Buy a second compatible key or retain another recovery method if losing the only key would lock you out. A hardware key is not a prerequisite for using passkeys and should not be purchased solely because a service offers a passkey button.
How to create and test a passkey
- Open the official account settings. Sign in through the service’s known address or official app, then look under Security, Sign-in, Authentication or a similarly named section.
- Select the passkey option. Labels may include “Create a passkey,” “Add passkey” or “Passkeys.” Confirm that you are adding it to the intended account.
- Approve the authenticator. Your phone, computer or security key will request a biometric, PIN, pattern or physical touch. This local approval authorizes the credential; it does not send the biometric to the website.
- Record where it is stored. Note the device and provider shown by the operating system. If synchronization is offered, understand which provider account controls access.
- Enroll another route. Add a second authenticator, a second device or the service’s documented recovery method before deleting an old sign-in option.
- Test in a separate session. Sign out or use a private browser window, select the passkey option and verify that the expected device prompt appears. Confirm that you can still recover the account if the prompt does not appear.
Menu names differ by service and operating system, so follow the service’s current instructions rather than assuming every account has the same controls.
What happens if you lose your phone or computer?
The answer depends on how the passkey was stored. With a synced passkey, you may restore access by signing in to the same credential-provider account on a replacement device, subject to that provider’s verification and supported platforms. With a device-bound passkey, you need another enrolled authenticator or the service’s account-recovery process. If neither exists, the service may require identity checks, a password, backup codes or manual support; outcomes differ by provider and account type.
For an important account, prepare before a loss:
- Enroll a second passkey on another device or a compatible external key.
- Keep the provider account itself protected with a strong, unique credential and its own recovery options.
- Save service-issued recovery codes in a secure offline location if they are offered.
- Know whether the service allows you to revoke a lost authenticator remotely.
- Do not remove the password or last fallback until the replacement method has been tested.
These precautions address access continuity; they do not eliminate risks in a provider account or a service’s support process. FIDO deployment guidance specifically treats recovery after loss of passkey access as a design constraint (FIDO, “Passkeys: The Journey to Prevent Phishing, Part 2,” 2025).
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- WORKS WITH 1000+ ACCOUNTS: Compatible with Google, Microsoft, and Apple. A single Security Key NFC secures 100 of your favorite accounts, including email, password managers, and more.
- FAST & CONVENIENT LOGIN: Plug in your Security Key NFC via USB-A and tap it, or tap it against your phone (NFC) to authenticate. No batteries, no internet connection, and no extra fees required.
- TRUSTED PASSKEY TECHNOLOGY: Uses the latest passkey standards (FIDO2/WebAuthn & FIDO U2F) but does not support One-Time Passwords. For complex needs, check out the YubiKey 5 Series.
- BUILT TO LAST: Made from tough, waterproof, and crush-resistant materials. Manufactured in Sweden and programmed in the USA with the highest security standards.
Should you delete your passwords?
Usually, no—not immediately. Keep a unique password or another working fallback while you confirm that every device you use can access the passkey and that the service’s recovery process works. Deleting the password can be reasonable for a service that explicitly supports a passwordless account and for which you have tested multiple recovery paths, but the decision is controlled by that service’s settings.
Removing a password does not remove all account risk. An attacker who compromises an email account, provider account, recovery channel or already-unlocked device may still affect access. Review alternate sign-in methods, active sessions and recovery contacts as part of the change.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Common problems and fixes
The passkey option is missing
Check that you are in the account’s official security settings, that the service has enabled passkeys for your region or account type, and that the browser or app is current. Some services expose passkeys only after another sign-in method has been verified.
The wrong device appears
Confirm which credential provider is active on the device and whether synchronization is enabled. Sign out of an unintended provider only after another recovery method is ready. If you are using a nearby-device or QR-code flow, ensure Bluetooth and the required browser permissions are enabled.
The biometric prompt fails
Use the device PIN or pattern if the authenticator offers it. Check that the device is unlocked, the security key is connected or within range, and the browser has permission to communicate with it. A failed biometric does not mean the passkey is deleted.
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- FIDO2 & Passkey Ready: Business-ready and FIDO2 L1 certified. This key is supported by major management suites and is ideal for both individual and enterprise deployment. Works seamlessly with Gmail, Facebook, GitHub, Dropbox, Coinbase, and more.
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- Check FIDO2 compatibility before purchase - Known limitations: ID Austria is not supported (requires FIDO2 Level 2). Windows Hello login only works with Windows Enterprise editions that support Entra ID, and NFC is NOT supported.
You replaced a device and cannot find the credential
Determine whether the original passkey was synced or device-bound. For a synced credential, restore the same provider account and complete its verification. For a device-bound credential, use another enrolled authenticator or begin the service’s recovery process. Avoid repeatedly guessing recovery details; follow the service’s lockout instructions.
The service still asks for a password
Passkey support may cover only sign-in, while sensitive changes or recovery still require a password. It may also be unavailable for the particular account, browser or device. Keep a unique password until the service clearly documents a passwordless route that you have tested.
Accessibility and device considerations
Passkeys replace keyboard entry with the authenticator’s local approval, which can help users who find complex password entry difficult. The reverse can also be true: a person may need a PIN, security key or another supported method if a biometric sensor is unreliable or inaccessible. Test the entire flow on the devices you actually use, including the recovery path, rather than judging accessibility from the enrollment screen alone.
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Cross-device sign-in may involve a nearby-device prompt, QR code, USB connection, NFC tap or Bluetooth. Corporate policies can restrict which authenticators are permitted. Ask an administrator which credential types and provider ecosystems are approved before enrolling a personal device for a work account.
A practical decision framework
| Your situation | Recommended approach | Reason |
|---|---|---|
| The service offers passkeys and you use a supported personal device. | Create a passkey and retain tested recovery access. | Reduces phishing and password-reuse exposure. |
| You use several devices from different ecosystems. | Choose a supported synced provider or enroll passkeys on more than one device. | Improves portability while making provider-account security important. |
| You need a separately controlled authenticator. | Consider two compatible FIDO2 security keys. | Provides a hardware workflow and a spare for loss. |
| The service has no passkey support. | Use a unique password generated and stored by a password manager. | Maintains strong protection until the service adds another method. |
| You cannot explain how recovery works. | Do not remove the existing sign-in method yet. | Passkey security is not useful if account access cannot be restored. |
Passkey setup checklist
- Use the service’s official account page or app.
- Confirm the passkey is being added to the intended account.
- Identify the device or provider that stores it.
- Check access from every device you expect to use.
- Enroll another authenticator or verify the service’s recovery route.
- Keep a unique password where the service still requires one.
- Before purchasing a security key, verify account, operating-system, browser and connection compatibility.
- After setup, review active sessions and remove a lost authenticator promptly.
The bottom line on passkeys versus passwords
Passkeys are the stronger default when a service supports them: they use a service-specific cryptographic credential, resist phishing and avoid exposing a reusable password during sign-in. Passwords remain a necessary fallback for unsupported services and inaccessible credentials. The key decision is not simply passkey or password; it is whether you can reach the authenticator and recover the account when a device, provider or service changes.
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