What Is a Passkey?

Summary

Passkeys are a secure, passwordless way to sign in using your fingerprint, face, or device PIN instead of a traditional password. They provide stronger protection against phishing attacks while making account access faster, easier, and more secure

Body

A passkey is a modern, passwordless way to sign in to your account. Instead of entering a password, a passkey uses your device's built-in security features, such as:

  • Fingerprint recognition
  • Facial recognition
  • Device PIN
  • Security key (where supported)

Passkeys are designed to be easier to use and more secure than traditional passwords. They help protect your account from phishing attempts, password theft, and account compromise. 


Why Is APSU Moving Toward Passkeys?

Microsoft is transitioning to more secure authentication methods across its services. Passkeys provide:

  • Stronger protection against phishing attacks
  • Improved account security
  • Faster sign-in experience
  • Reduced password-related support requests
  •  Easier access across trusted devices 

How Do Passkeys Work?

When a passkey is created:

  1. Your device generates a unique cryptographic key pair.
  2. A public key is stored securely with the service you are signing into.
  3. A private key remains securely stored on your device.
  4. When you sign in, you verify your identity using your fingerprint, face, or PIN.
  5. The device confirms your identity without sending a password across the internet. 

Because a passkey is unique to you and your device, it is much more difficult for cybercriminals to steal or reuse. 


Benefits of Using a Passkey

Traditional Password Passkey
Can be forgotten Nothing to remember
Can be guessed or stolen Protected by cryptography
Vulnerable to phishing Phishing-resistant
Must be typed manually Sign in with face, fingerprint, or PIN
Often reused across sites Unique to each account

What Can I Use as a Passkey?

Depending on your device, a passkey may be stored in:

  • Windows Hello
  • Microsoft Authenticator
  • Microsoft Password Manager
  • Apple iCloud Keychain
  • Google Password Manager
  • A FIDO2 security key

Frequently Asked Questions

Do passkeys replace Multi-Factor Authentication (MFA)?

Passkeys are considered a strong authentication method and may replace the need to enter a password while maintaining a high level of security. 

Can I use a passkey on multiple devices?

Yes. Passkeys can be synchronized through supported password managers, allowing secure sign-in across multiple devices. 

What happens if I get a new phone or computer?

If your passkey is stored in a synchronized credential manager, it can be restored on your new device. If stored only on one device, you should have alternative authentication methods available. 

Are passkeys more secure than passwords?

Yes. Passkeys are resistant to phishing and much harder for attackers to steal or reuse than traditional passwords. 


Additional Resources

 

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Article ID: 170608
Created
Mon 8/17/26 4:39 PM
Modified
Mon 8/17/26 4:51 PM