For years, internet users have been told to create longer, stronger and more complicated passwords.

Use a mixture of uppercase letters, lowercase letters, numbers and symbols.

Never reuse a password.

Change passwords when necessary.

Use a different password for every account.

The advice is sensible, but there is a problem: passwords are difficult to manage.

People forget them. They reuse them. They write them down. They accidentally reveal them through phishing attacks. And when a password is stolen, criminals may try using it on other websites.

A different approach is now becoming increasingly common: passkeys.

Instead of asking you to remember a password, a passkey allows you to sign in using the security method already built into your device, such as a fingerprint, face recognition, PIN or device password.

The technology is designed to make account logins both easier and more resistant to phishing.

So what exactly is a passkey, and should you start using one?

What Is a Passkey?

A passkey is a digital credential designed to replace traditional passwords.

When you create a passkey for a website or app, your device generates a pair of cryptographic keys.

One part is kept securely on your device or within your passkey provider, while the corresponding public information is used by the service to verify your login.

You do not have to memorize the secret key.

Instead, when you want to sign in, you normally confirm your identity using the same method you use to unlock your device.

That might be:

Your fingerprint
Face recognition
A device PIN
A device password
Another supported authentication method

The FIDO Alliance describes passkeys as credentials based on FIDO standards that allow people to sign in using the same process they use to unlock their devices.

Why Were Passkeys Created?

Passwords have a fundamental weakness.

The user has to know and enter a secret.

That secret can potentially be:

guessed
stolen
reused
exposed in a data breach
captured through phishing
accidentally shared

Passkeys use a different security model.

Instead of sending a password to a website, authentication relies on cryptographic credentials.

The passkey is also associated with the particular website or service for which it was created.

This makes it much harder for a fake website to trick the authentication system into accepting a credential intended for another site. FIDO describes passkeys as phishing-resistant credentials.

How Does a Passkey Work?

The technical process can sound complicated, but the user experience is usually simple.

Imagine you create a passkey for an online account.

Step 1: You choose to create a passkey

The website or app offers an option such as:

Create a passkey

Step 2: Your device creates the credential

Your device creates the cryptographic information required for authentication.

Step 3: You verify yourself

You may be asked to use your fingerprint, face recognition or device PIN.

Step 4: The account remembers the passkey

The website stores the information it needs to verify future logins.

Step 5: You return later

Instead of typing a password, you select the passkey.

Step 6: You authenticate on your device

You use your fingerprint, face, PIN or another supported method.

The login is completed without you typing a traditional password.

FIDO explains that passkeys use public-key cryptography and that the private key remains associated with the user's authenticator while the service can use the corresponding public key for verification.

Are Passkeys the Same as Fingerprints?

No.

This is one of the most common misunderstandings.

Your fingerprint or face is not the passkey itself.

Instead, biometric authentication can be used to unlock or authorize the credential stored on your device.

For example:

Website → asks for passkey → phone verifies your fingerprint → passkey authentication completes.

Your biometric information is generally processed locally by the device rather than being sent to the website as part of the passkey login. The FIDO Alliance says biometric information used in this process does not leave the user's device.

Why Are Passkeys Harder to Phish?

Consider a traditional phishing attack.

You receive an email that appears to come from your bank.

The message says:

“Your account requires immediate verification.”

You click a link and arrive at a fake website.

If you enter your username and password, the attacker may capture them.

A passkey works differently.

A properly implemented passkey is cryptographically tied to the legitimate website or service for which it was created.

That means a fake website generally cannot simply collect your passkey the way it can collect a password.

This is one of the biggest security advantages of the technology.

The U.K. National Cyber Security Centre announced in April 2026 that it would begin recommending passkeys where services support them, citing their security advantages against common credential attacks.

Are Passkeys Really Becoming Popular?

Yes.

Passkeys are no longer just an experimental concept.

The FIDO Alliance's 2026 global consumer and workforce research reported 5 billion passkeys in active use worldwide. Its survey also found that 75% of consumers surveyed had enabled passkeys on at least some accounts.

The same research found that passwords remain widely used, meaning the transition is happening gradually rather than overnight.

You may therefore encounter both systems for years:

Password + passkey + other authentication methods.

Where Can You Use Passkeys?

Passkey support is available across major operating systems, browsers and authentication providers.

Depending on the service and your devices, you may encounter passkeys when signing into:

Email accounts
Social-media services
Shopping websites
Financial services
Productivity platforms
Cloud services
Other online accounts

However, not every website supports passkeys yet.

If you do not see a passkey option, you may still need to use a password or another authentication method.

What Happens When You Get a New Phone?

This is an important question.

Many people worry that losing or replacing a phone means losing all their passkeys.

The answer depends on how the passkey is stored.

Some passkeys can be securely synchronized across your devices through a passkey provider.

This means that when you set up a new device using the same provider and account, your passkeys may become available there.

FIDO describes synced passkeys as credentials that can be securely synchronized across a user's devices, while device-bound passkeys remain tied to a particular device or security key.

That distinction is important.

Not every passkey works exactly the same way.

What If You Lose Your Phone?

Losing a phone is stressful, but it does not necessarily mean losing access to every account.

The recovery process depends on the service and how your passkeys are managed.

Some users may have synchronized passkeys available on another device.

A service may also provide account-recovery options.

For important accounts, it is wise to understand the recovery process before you lose access to a device.

Do not wait until an emergency to discover that you have no backup method.

Can You Use a Passkey on a Different Device?

Yes, in many situations.

FIDO supports cross-device authentication.

For example, you may be signing into a website on a laptop while your passkey is available on your phone.

A QR-code-based process can allow the phone to help authenticate the login on the other device.

This means a passkey does not necessarily mean:

“The passkey must always be on the same device.”

Modern passkey systems are designed to support multiple-device experiences.

Are Passkeys Better Than Passwords?

For many common account-security threats, passkeys offer significant advantages.

Passwords

Can be guessed
Can be reused
Can be stolen through phishing
Need to be remembered or stored
Can appear in password databases after breaches

Passkeys

Do not require memorizing a traditional password
Are designed to resist phishing
Use cryptographic credentials
Can use device biometrics or PINs for user verification
Can be synchronized across devices, depending on the implementation

FIDO describes passkeys as phishing-resistant and designed to eliminate shared secrets such as traditional passwords.

Does That Mean Passwords Are Dead?

Not yet.

Passwords remain extremely common.

Many websites still require them, and some services use passwords alongside other authentication methods.

There are also situations where account recovery can still involve traditional credentials.

The transition toward passkeys is therefore better understood as:

a gradual move away from passwords

rather than:

passwords disappearing overnight.

What About Two-Factor Authentication?

Passkeys can also change the traditional idea of two-factor authentication.

A password plus an SMS code is a common example of two-step authentication.

But SMS-based verification can have weaknesses, particularly when attackers use social engineering or other techniques to intercept or redirect authentication.

FIDO's security model is designed to provide phishing-resistant authentication, and the NCSC's 2026 assessment concluded that FIDO2 credentials, including passkeys, are as secure or more secure than traditional MFA against the common credential attacks it evaluated.

That does not mean every implementation is automatically perfect.

The service, device, recovery process and user's overall security practices still matter.

Should You Start Using Passkeys?

For accounts that support them, passkeys are worth considering, particularly for important accounts.

A sensible approach is to start with accounts that contain valuable or sensitive information.

For example:

Your primary email
Your main cloud account
Important shopping accounts
Financial services that support passkeys
Other accounts containing personal information

Your email account is especially important because it can sometimes be used to reset passwords for other services.

Protecting it should therefore be a high priority.

How to Get Started

If you want to begin using passkeys, follow these general steps.

1. Choose an important account

Start with an account you use regularly.

2. Open its security settings

Look for sections such as:

Security

Sign-in

Login methods

Passkeys

3. Select “Create a passkey”

The exact wording varies by service.

4. Follow your device's instructions

You may be asked for your fingerprint, face recognition or PIN.

5. Check your recovery options

Make sure you understand how you would recover the account if your device becomes unavailable.

6. Keep your devices secure

A passkey protects your account, but your device itself still needs protection.

Use a strong device PIN and keep your operating system updated.

Three Things to Remember About Passkeys

If you remember nothing else from this article, remember these three points.

1. A passkey is not a password stored in a different place.

It uses a different authentication model based on cryptographic credentials.

2. Your fingerprint is not the passkey.

Your biometric or PIN can authorize the use of a credential stored on your device.

3. Passkeys are designed to resist phishing.

They are tied to the legitimate service rather than simply being a secret that you type into any website.

The Future of Online Logins

The internet spent decades building systems around passwords.

Now the industry is trying to move beyond them.

The direction is becoming increasingly clear: make authentication easier for legitimate users while making stolen credentials less useful to attackers.

Passkeys are one of the most important technologies supporting that transition.

They do not eliminate every security problem.

They do not make accounts invulnerable.

And they do not remove the need for good security habits.

But they can eliminate one of the internet's oldest problems:

having to remember a different secret for every website.

Final Thoughts

Passwords have been part of online life for decades, but they were never a perfect solution.

They are difficult to manage, easy to reuse and vulnerable to phishing.

Passkeys offer a different approach.

Instead of typing a secret into a website, you can often authenticate using the device you already trust—through a fingerprint, face recognition or PIN.

The technology is already moving into the mainstream. FIDO Alliance's 2026 research reports billions of passkeys in active use globally, while security organizations are increasingly recognizing their phishing-resistant design.

You do not need to replace every password today.

But the next time one of your important accounts offers you the option to create a passkey, it may be worth taking a closer look.

The future of logging in may be less about remembering better passwords—and more about proving that you are the person holding the right device.

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