Passkeys: Why They’re Safer Than Passwords

For decades, passwords have been the main way we log into websites, apps, and online accounts. But passwords have a lot of problems: they’re easy to forget, often reused, vulnerable to phishing, and frequently exposed in data breaches.

That’s why many major technology companies, including Apple, Google, Microsoft, Amazon, PayPal, and others, are pushing a newer login method called passkeys.

Passkeys are designed to replace passwords with something easier to use and much harder for criminals to steal. Instead of typing a password, you can sign in using your fingerprint, face scan, device PIN, or security key.

So what exactly are passkeys, why are they more secure, and should you start using them? Let’s break it down.

What Is a Passkey?

A passkey is a modern, passwordless sign-in method that lets you log into an account without entering a traditional password.

Instead of typing something like:

Summer2024!Password

you verify your identity using something already built into your device, such as:

• Face ID
• Touch ID
• Windows Hello
• Android fingerprint unlock
• Your phone’s screen lock PIN
• A physical security key

Passkeys are based on security standards called FIDO2 and WebAuthn, which were developed to make online logins safer and easier.

In simple terms:

A passkey lets your device prove it’s really you without sending a password over the internet.

Why Passwords Are a Problem

Passwords are familiar, but they come with major weaknesses.

1. People Reuse Passwords

Many people use the same password across multiple websites. If one website is hacked, attackers may try that same password on email accounts, banking sites, social media, and business tools.

This is called credential stuffing, and it’s one of the most common ways accounts get compromised.

2. Passwords Can Be Phished

Phishing happens when a scammer tricks you into entering your login details on a fake website.

For example, you may receive an email that looks like it came from your bank, Microsoft, Google, or a shipping company. You click the link, enter your username and password, and unknowingly hand your credentials to an attacker.

Even smart, careful people can fall for phishing attacks because fake login pages can look very convincing.

3. Passwords Can Be Stolen in Data Breaches

When a company gets hacked, attackers may steal databases containing usernames and passwords.

Good companies store passwords in a protected form called a hash, but weak passwords can still sometimes be cracked. Once attackers have your password, they may try to use it elsewhere.

4. Strong Passwords Are Hard to Remember

Security experts often recommend long, unique passwords for every account. That’s good advice, but it’s difficult to manage without a password manager.

As a result, many people choose passwords that are easy to remember — and easy to guess.

Why Passkeys Are Better Than Passwords

Passkeys solve many of the biggest problems with passwords.

1. Passkeys Are Phishing-Resistant

This is one of the biggest advantages.

A passkey is tied to the specific website or app where it was created. If you create a passkey for:

examplebank.com

it will not work on a fake site like:

examp1ebank-login.com

Even if a scammer tricks you into visiting a fake login page, your device will not provide the correct login proof to the wrong website.

That makes passkeys far more resistant to phishing than passwords or even many forms of two-factor authentication.

2. There’s No Password to Steal

With passkeys, your actual secret is not stored on the website’s server.

Instead, passkeys use something called public key cryptography.

When you create a passkey, two related keys are generated:

• A public key, which is stored by the website or app
• A private key, which stays on your device or inside your secure password/passkey manager

The public key is safe to share. The private key is the sensitive part, and it is never sent to the website.

When you log in, the website sends your device a challenge. Your device uses the private key to sign that challenge, proving you are the correct user. The website checks the response using the public key.

The important part is this:

Your private key never leaves your device, and your password never travels across the internet — because there is no password.

3. Data Breaches Become Less Dangerous

If a website using passwords gets breached, attackers may steal password hashes and try to crack them.

With passkeys, the website only stores your public key. If that public key is stolen, it is not useful for logging in. Attackers cannot reverse it to get your private key.

That means passkeys dramatically reduce the damage caused by server-side credential breaches.

4. Passkeys Are Easier to Use

Security only works if people actually use it. Passkeys are designed to be both secure and convenient.

Instead of remembering and typing a long password, you can log in with:

• Your fingerprint
• Your face
• Your device PIN
• A security key

This makes logging in faster, especially on mobile devices.

5. Passkeys Help Prevent Weak Password Habits

Because passkeys remove the need to create and remember passwords, users are less likely to:

• Reuse passwords
• Choose simple passwords
• Store passwords insecurely
• Share passwords by email or text
• Fall for fake login forms

That’s a major improvement for both individuals and businesses.

What Makes Passkeys So Secure?

Passkeys are secure because they combine several strong protections.

Public Key Cryptography

As mentioned earlier, passkeys use a pair of cryptographic keys. The private key stays protected, while the public key is stored by the service.

The website never needs to know your private key, and it never receives a reusable secret like a password.

Device-Based Protection

Your passkey is protected by your device’s security system. For example:

• Apple devices may use iCloud Keychain and Face ID or Touch ID.
• Android devices may use Google Password Manager and fingerprint or screen lock.
• Windows devices may use Windows Hello.
• Hardware security keys may store passkeys directly on the key.

This means an attacker usually needs access to your trusted device and the ability to unlock it.

Built-In Phishing Protection

Passkeys are linked to the legitimate website or app. This is sometimes called origin binding.

Your passkey for one site cannot be used on another site. So even if you land on a fake login page, the passkey authentication should fail.

No Shared Secret

Passwords are shared secrets. You know your password, and the website verifies it.

Passkeys are different. The website does not need to know your private key. It only needs the public key.

That makes passkeys much safer by design.

Biometric Data Is Not Sent to Websites

Many people wonder: “If I use my face or fingerprint, does the website get that data?”

The answer is no.

Your fingerprint or face scan is used locally on your device to unlock access to the passkey. The website does not receive your biometric data.

In other words:

Face ID, Touch ID, or fingerprint unlock confirms you locally. The website only receives a cryptographic proof, not your face or fingerprint.

Are Passkeys the Same as Two-Factor Authentication?

Not exactly.

Two-factor authentication, or 2FA, usually means you log in with a password plus a second step, such as:

• A text message code
• An authenticator app code
• A push notification
• A security key

Passkeys can replace the password and, in many cases, provide strong authentication on their own.

They are often considered more secure than password plus SMS code because SMS codes can be intercepted, stolen, or phished.

That said, some accounts may still use passkeys alongside additional security checks depending on the risk level.

What Happens If You Lose Your Device?

This is one of the most common questions about passkeys.

The answer depends on how your passkeys are stored.

Synced Passkeys

Many passkeys can be synced through services such as:

• Apple iCloud Keychain
• Google Password Manager
• Microsoft account/Windows Hello
• Some password managers

If you get a new device and sign back into your Apple, Google, Microsoft, or password manager account, your passkeys may be restored.

Device-Bound Passkeys

Some passkeys are stored only on one device or hardware security key. These are sometimes used in higher-security environments.

They can be more secure in some ways, but you need a backup plan. If you lose the device or key, you may need account recovery or a backup security key.

Best Practice

For important accounts, make sure you have recovery options set up, such as:

• A second trusted device
• A backup hardware security key
• Updated recovery email and phone number
• Printed recovery codes, if offered
• A trusted password manager with passkey support

Are Passkeys Perfect?

Passkeys are a major security improvement, but no technology is perfect.

Here are a few things to keep in mind.

Account Recovery Still Matters

If your recovery email is weak or compromised, attackers may still be able to reset access to your accounts. Passkeys protect login, but account recovery settings need to be secure too.

Device Security Is Important

If someone has access to your unlocked device, they may be able to access your accounts. Keep your devices protected with strong screen locks and security updates.

Not Every Website Supports Passkeys Yet

Adoption is growing quickly, but many websites still rely on passwords. For now, most people will use a mix of passkeys, passwords, and two-factor authentication.

Some Users May Need Time to Adjust

Passkeys are easier once you understand them, but they’re still new. People may need guidance on where passkeys are stored, how to use them across devices, and what to do if a device is lost.

Should You Start Using Passkeys?

Yes — especially for important accounts that support them.

Good places to start include:

• Email accounts
• Banking and financial accounts
• Cloud storage accounts
• Work accounts
• Password managers
• Shopping accounts with saved payment details
• Social media accounts

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

Tips for Using Passkeys Safely

If you’re ready to use passkeys, here are a few practical tips.

1. Keep Your Devices Updated

Passkeys rely on your device’s built-in security features. Keep your phone, computer, browser, and apps updated.

2. Use a Strong Device Lock

Use a strong PIN, password, fingerprint, or face unlock on your devices. Avoid simple PINs like:

1234
0000
1111

3. Set Up Recovery Options

Make sure your account recovery information is current. If available, save backup codes in a safe place.

4. Use Passkeys for High-Value Accounts First

Start with your most important accounts, such as email, banking, cloud storage, and password managers.

5. Keep Using a Password Manager

Even with passkeys, you will likely still have some accounts that require passwords. A password manager remains useful for storing passwords, recovery codes, secure notes, and sometimes passkeys.

Passkeys vs. Passwords: Quick Comparison

Feature	Passwords	Passkeys
Can be forgotten	Yes	Usually no
Can be reused	Yes	No, each passkey is unique
Can be phished	Yes	Highly resistant
Can be stolen in a data breach	Often	Public key may be exposed, but not useful for login
Requires typing	Yes	Usually no
Uses biometrics locally	No	Often yes
Private secret sent to website	Yes, or password-derived proof	No
Convenient on mobile	Sometimes	Very

Final Thoughts

Passkeys are one of the biggest improvements in online security in years. They are easier to use than passwords and much harder for attackers to steal, guess, reuse, or phish.

Instead of relying on something you have to remember, passkeys use strong cryptography and your trusted device to prove your identity securely.

Passwords are not disappearing overnight, but the direction is clear: the internet is moving toward passwordless login. As more websites and apps support passkeys, they will likely become the new standard for secure sign-ins.

If your important accounts offer passkeys, it’s worth setting them up now. You’ll get a login experience that is faster, simpler, and significantly more secure than traditional passwords.