Can you use the same one YubiKey for Multiple Accounts? - Aditya R Sharma (2024)

When it comes to online security, using a YubiKey is a great way to add an extra layer of protection to your accounts. But Can you use the same one YubiKey with multiple accounts?

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Can You Use One YubiKey for Multiple Accounts?

As someone who values security and convenience, I often wonder if it’s possible to use one YubiKey for multiple accounts. After researching and experimenting, I’ve found that the answer is yes, it is possible.

Let’s uncover How

Why You Might Want to Use One YubiKey for Multiple Accounts ?

Using one YubiKey for multiple accounts can be beneficial in several ways:

  • Cost-effective: Purchasing multiple YubiKeys can be expensive, and using one for multiple accounts can save you money.
  • Convenient: Having all your accounts on one device means you don’t have to carry multiple keys or remember which key goes with which account.
  • Efficient: Setting up one YubiKey for multiple accounts can be faster and easier than setting up multiple keys.

To use one YubiKey for multiple accounts, you’ll need to set it up correctly and follow some best practices.

Wondering if we can use YubiKey with Password Managers – Check this, where I have explained it in details

Best Practices for Using One YubiKey for Multiple Accounts

While using one YubiKey for multiple accounts can be convenient, it’s important to follow some best practices to ensure your accounts are secure:

  • Use different slots: YubiKeys have multiple slots that can be used for different accounts. Make sure you use a different slot for each account to prevent any potential security issues.
  • Backup your YubiKey: Make sure you have a backup YubiKey in case you lose your primary one. You can also save a copy of the QR code or private key in a safe place to scan and add later.
  • Use strong passwords: While YubiKeys provide an extra layer of security, it’s still important to use strong passwords for your accounts.

How to Use One YubiKey for Multiple Accounts

I can say that it’s definitely possible to use the same YubiKey for unlimited sites and accounts.

Types of YubiKeys That Support Multiple Accounts

Before we get started, it’s important to note that not all YubiKeys support multiple accounts.

However, most YubiKeys that support WebAuthn do.

Can you use the same one YubiKey for Multiple Accounts? - Aditya R Sharma (1)

Some of the YubiKeys that support WebAuthn include:

  • YubiKey 5 NFC
  • YubiKey 5C
  • YubiKey 5Ci
  • YubiKey 5 Nano

How to Set Up Your YubiKey for Multiple Accounts using WebAuthn for Unlimited Sites

To use the same YubiKey for unlimited sites and accounts, you’ll need to use WebAuthn. Here’s how to set it up:

  1. First, make sure your YubiKey is set up for WebAuthn. You can do this by following the instructions provided by Yubico.
  2. Next, log in to the website or service you want to use your YubiKey with.
  3. Look for the option to add a security key or enable two-factor authentication. Select this option.
  4. Follow the instructions provided by the website or service to register your YubiKey. This will typically involve inserting your YubiKey and pressing a button.
  5. Once your YubiKey is registered, you’ll be able to use it to log in to the website or service.
  6. Repeat steps 2-5 for all the websites and services you want to use your YubiKey with.

That’s it! With WebAuthn, you can use the same YubiKey for unlimited sites and accounts. Just make sure to keep your YubiKey in a safe place and don’t share it with anyone else.

Uncover the truth: Can YubiKey be hacked? Read this before making your purchase decision.

How to Log In Using Your YubiKey for Multiple Accounts

When you use your YubiKey for authentication, you’ll need to insert it into your device and press the button on the key. Once you do that, the YubiKey will generate a one-time password (OTP) that you can use to log in to your account.

Can you use the same one YubiKey for Multiple Accounts? - Aditya R Sharma (3)

If you have multiple accounts that you want to use your YubiKey with, you’ll need to make sure that each account is set up to use the YubiKey. You can usually do this by going to the security settings of each account and selecting the option to use a security key or two-factor authentication.

How to Add or Remove Accounts on Your YubiKey

If you want to use your YubiKey with multiple accounts, you’ll need to add each account to the key. To do this, you can use the Yubico Authenticator app. The app allows you to add and remove accounts from your YubiKey, and it also lets you manage your TOTP codes.

To add an account to your YubiKey, you’ll need to open the Yubico Authenticator app and insert your YubiKey into your device. From there, you can select the option to add an account and enter the information for the account you want to add. If the account has a QR code, you can use the app to scan the code and automatically add the account to your YubiKey.

If you want to remove an account from your YubiKey, you can do so by opening the Yubico Authenticator app and selecting the account you want to remove. From there, you can select the option to remove the account from your YubiKey.

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Frequently Asked Questions: Potential Risks of Using One YubiKey for Multiple Accounts

Here are some frequently asked questions that I hope will help you better understand the potential risks and how to mitigate them.

What Happens If Your YubiKey Is Lost or Stolen?

If your YubiKey is lost or stolen, anyone who finds or steals it can use it to gain access to your accounts. This is why it’s important to keep your YubiKey safe and secure. You can also protect yourself by registering a backup YubiKey with your accounts. This way, if your primary YubiKey is lost or stolen, you can use your backup YubiKey to access your accounts.

What Happens If Your YubiKey Is Duplicated?

If your YubiKey is duplicated, someone else can use the duplicate to gain access to your accounts. This is why it’s important to keep your YubiKey safe and secure. You can also protect yourself by registering a backup YubiKey with your accounts. This way, if your primary YubiKey is duplicated, you can use your backup YubiKey to access your accounts.

What Happens If Your YubiKey Is Damaged or Malfunctioning?

If your YubiKey is damaged or malfunctioning, you may not be able to access your accounts. This is why it’s important to keep your YubiKey safe and secure and to have a backup YubiKey registered with your accounts. If your primary YubiKey is damaged or malfunctioning, you can use your backup YubiKey to access your accounts.

Can you use the same one YubiKey for Multiple Accounts? - Aditya R Sharma (2024)

FAQs

Can you use the same one YubiKey for Multiple Accounts? - Aditya R Sharma? ›

If you have multiple accounts that you want to use your YubiKey with, you'll need to make sure that each account is set up to use the YubiKey. You can usually do this by going to the security settings of each account and selecting the option to use a security key or two-factor authentication.

Can I use 1 YubiKey for multiple accounts? ›

A YubiKey supports an unlimited number of accounts with both WebAuthn and U2F protocols. If you're using your hardware key for TOTP, you can only hold 32 accounts.

Can one YubiKey be used for multiple computers? ›

A single YubiKey works across multiple shared devices including desktops, laptops, mobile, tablets, and notebooks, enabling users to utilize the same key as they navigate between devices, and helping you deploy phishing-resistant MFA at scale.

Can I reuse my YubiKey? ›

Yes! You can use your YubiKey to log in on as many devices as you want, so long as there's a slot for it.

How many credentials can YubiKey hold? ›

The YubiKey 5 FIPS OATH application can store up to 32 OATH credentials, either OATH-TOTP (time-based) or OATH-HOTP (counter-based), as defined in the OATH specification. These credentials are separate from those stored in the OTP application. They can only be accessed through the CCID channel.

Can I use the same authenticator for two accounts? ›

Adding multiple accounts to Microsoft Authenticator is a straightforward process. Here's a step-by-step guide to help you: Download and Install Microsoft Authenticator: If you haven't already, download and install the Microsoft Authenticator app from the Google Play Store or Apple App Store.

Can you use the same security key for multiple devices? ›

What is a security key? A security key is a hardware-based device that plugs into a computer to simplify two-step authentication. When prompted to authenticate, you simply tap the physical key. There's no need to use your smartphone, and the same security key can be used on multiple devices.

How many accounts can I register my YubiKey with? ›

OATH-TOTP - the YubiKey 5's OATH application can hold up to 32 OATH-TOTP credentials (AKA authenticator codes). OTP - this application can hold two credentials, can be registered with an unlimited number of services.

Is one YubiKey enough? ›

Yubico always recommends adding two keys to each of your online services and accounts; one primary and one secondary as backup in case the primary is lost.

Can someone else use my YubiKey? ›

So if one is lost or broken then I still have another to log into sites. As for theft, if you're using your yubikey as a 2nd factor then they still can't log in because they don't know your password. If you're using your yubikey as both factors then it either has a PIN or biometrics, so the thief can't log in.

What is the lifespan of a YubiKey? ›

A Yubikey will essentially last forever, and if you stay clear of the insanity that is Passkeys its Webauthn element can support an infinite number of websites.

Can you have duplicate YubiKeys? ›

If you lose your Yubikey, you can still use your phone authenticator app, but you cannot create a backup Yubikey. However, Yubikey also provides methods to recover your account, so you can get a replacement.

How many passkeys can you have on YubiKey? ›

 Yubikeys can contain passkeys. YubiKeys have had the ability to create these passwordless-enabled FIDO2 credentials (passkeys) since the YubiKey 5 Series became available in mid-2018. Currently, YubiKeys can store a maximum of 25 passkeys.

Does YubiKey work with multiple accounts? ›

If you want to use your YubiKey with multiple accounts, you'll need to add each account to the key. To do this, you can use the Yubico Authenticator app. The app allows you to add and remove accounts from your YubiKey, and it also lets you manage your TOTP codes.

Which YubiKey is most secure? ›

The YubiKey 5 FIPS certified security keys meet the highest level of assurance (AAL3) of the new NIST SP800-63B guidelines.

Can I use YubiKey for all my passwords? ›

The YubiKey works with Password Safe to protect your passwords using two-factor authentication (2FA). Both a master password and a YubiKey are needed to enable access to your Password Safe file, which contains the usernames, websites, passwords and other information for all of your online accounts.

Can I use one SSH key for multiple accounts? ›

So, No - you'll need a separate key for each account. Although you need multiple ssh key pairs for multiple accounts you can configure multiple ssh identities and use via aliases on your machine. You can also just use your username in place of "git" or "hg". Still need separate keys, though.

How many certificates can a YubiKey hold? ›

“A PIV-enabled YubiKey NEO holds 4 distinct slots for certificates and a YubiKey 4 & 5 holds 24, as specified in the PIV standards document. Each of these slots is capable of holding an X. 509 certificate, together with its accompanying private key.

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