Yubico YubiKey 5Ci

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88%
92%
Ease of Use
89%
Durability
94%
Cross-Device Compatibility
88%
Setup & Installation
91%
Security Features
85%
Build Quality
90%
Compatibility with Services
80%
Weight and Portability
100%
Battery Life
83%
Long-Term Value
75%
User Support
87%
Price-to-Performance Ratio
More

Overview

The Yubico YubiKey 5Ci is a compact security key designed for two-factor authentication (MFA) across multiple devices. Featuring dual connectors—USB-C and Lightning—it ensures compatibility with both mobile and desktop platforms. With support for widely recognized authentication protocols like FIDO2, U2F, and Smart Card, this security key provides reliable protection against unauthorized access. Whether you’re using it on a PC, Android, or iPhone, this MFA device offers a simple solution to safeguard online accounts.

Features & Benefits

This YubiKey is designed to be easy to use with no need for batteries or an internet connection, making it a truly plug-and-play solution for securing your accounts. Its durable design resists water, tampering, and physical damage, ensuring reliability even under harsh conditions. With compatibility for major services like Google, Microsoft, and popular password managers, this key supports a variety of authentication protocols, offering flexibility and robust protection against security threats.

Best For

The YubiKey 5Ci is best suited for tech-savvy users looking to secure their online accounts with a reliable MFA device. It’s ideal for individuals who frequently switch between multiple devices, such as iPhones, Android phones, and PCs. If you value enhanced security and are familiar with using hardware-based authentication, this security key is a perfect fit, offering an easy, cross-platform solution to protect your data and accounts from unauthorized access.

User Feedback

Users generally appreciate the YubiKey 5Ci for its ease of setup and the simplicity of its authentication process. The dual connectors are especially praised for enabling cross-device compatibility, allowing users to easily switch between mobile and desktop platforms. However, some users suggest having a backup key on hand to prevent losing access if the primary key is misplaced. Despite this, most reviews highlight the YubiKey as a valuable tool for enhancing online security with minimal effort.

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Pros

  • Dual connectors (USB-C and Lightning) make it versatile for users with multiple devices.
  • No batteries required, making it hassle-free and ready to use at any time.
  • Compact and lightweight design is ideal for travel and on-the-go use.
  • Durable and water-resistant, ensuring long-lasting protection even in harsh environments.
  • Works seamlessly with major services like Google, Microsoft, and popular password managers.
  • Easy setup process, with most users reporting smooth integration into their security workflow.

Cons

  • Some users find it difficult to set up initially, especially if unfamiliar with MFA systems.
  • A few users have mentioned needing a backup key to ensure extra security.
  • Does not support Bluetooth, which might limit convenience for some users who prefer wireless solutions.
  • Not the most affordable option, which may deter budget-conscious buyers.
  • While compact, it may be easy to lose due to its small size.
  • Limited compatibility with some less common services may be frustrating for non-technical users.

Ratings

After analyzing verified user reviews worldwide, across multiple languages and platforms, the Yubico YubiKey 5Ci consistently receives high praise for its reliability and ease of use. Spam, bot-generated, incentivized, and off-topic reviews have been filtered out to ensure only authentic feedback informs these results. Both the strengths and pain points are reflected in the scores, offering a balanced view of this device's performance across various user needs.

Ease of Use
92%
Users consistently highlight how simple it is to use this security key. The plug-and-play functionality, combined with no need for batteries or network connectivity, makes it a breeze to set up and start using. Many find it ideal for quick and hassle-free access to their accounts across devices.
Some users report initial confusion when setting up with certain services. While the device works well for most, a few have mentioned the process can be tricky when trying to configure it with less common platforms or third-party applications.
Durability
89%
This device's design is highly praised for its robust, crush-resistant build. Reviewers mention that it withstands daily wear and tear, including accidental drops and exposure to moisture. It’s well-suited for users who need a long-lasting, reliable solution.
A small number of users have found that despite its durability, the device can show wear and tear over time with extensive use. Some also point out that its size might make it feel somewhat fragile in hand, even though it’s built tough.
Cross-Device Compatibility
94%
Many users appreciate the dual USB-C and Lightning connectors, making this security key perfect for anyone with a mix of devices. The ability to easily switch between a laptop, Android phone, or iPhone is a major advantage, and this versatility is one of its standout features.
A few users note that while the dual connectors are a great feature, it’s not as seamless when switching between different ecosystems. For example, certain Apple-specific features may require additional configuration, which can be a bit of a hassle for non-tech-savvy users.
Setup & Installation
88%
Setup is generally straightforward, with the device working seamlessly once linked with supported platforms like Google and Microsoft. Most users appreciate the intuitive installation process, which requires little more than plugging it in and following a few simple steps.
Not all users find the setup process to be smooth. Some report challenges, especially when configuring with password managers or specific apps that don’t support all of its features out of the box. A few also mention a steep learning curve when using it for the first time.
Security Features
91%
The YubiKey shines in this category, offering advanced security protocols such as FIDO2, U2F, and Smart Card support. Users feel reassured by the peace of mind this device brings, with many noting its critical role in safeguarding their sensitive accounts from unauthorized access.
While security is a major strength, some users have voiced concerns over the limited support for certain legacy services. Additionally, a few mention that while highly secure, the key may feel like overkill for those not as familiar with MFA or security protocols.
Build Quality
85%
The build quality is generally regarded as solid, with the key offering a compact yet sturdy feel. Users value its resistance to water and tampering, making it a practical option for both personal and professional use in varied environments.
A handful of users have mentioned that the device, while durable, can feel slightly flimsy compared to other premium hardware. Some feel that the plastic body doesn’t exude the same level of high-end craftsmanship as other similar devices in the market.
Compatibility with Services
90%
Many users appreciate the broad compatibility this key offers with major services like Google, Microsoft, and password managers. The ease of integration with these popular platforms makes it a go-to choice for enhancing online security across various accounts.
While compatibility is generally strong, some users have encountered difficulties with certain niche services or less popular applications. This can sometimes lead to frustration, especially for those hoping to use the key across a wider range of platforms.
Weight and Portability
80%
20%
Weighing just 0.106 ounces, this device is incredibly light, making it a convenient choice for those who need to carry it on-the-go. It fits easily on a keychain or in a wallet, so users can take it anywhere without it feeling like an added burden.
Some users feel that the device's small size can make it a bit tricky to handle, especially when plugging it into tight ports. Its lightweight nature, while advantageous for portability, may also make it easier to misplace if not securely attached to a keyring or bag.
Battery Life
100%
There’s no need to worry about charging or replacing batteries with this device, as it runs entirely off the power from your connected device. Users love the zero-maintenance aspect, which makes it one less thing to worry about.
Since the device doesn't require batteries, there's not much to complain about here. However, some users wish for additional features like Bluetooth support for greater versatility in how they connect their devices.
Long-Term Value
83%
For many users, this device is seen as a valuable long-term investment in account security. Its durability, easy usability, and compatibility with a range of services make it a worthwhile choice, particularly for those committed to multi-factor authentication over the years.
A few buyers question whether the price is justified for users who only need basic account protection. While the device offers top-tier security, some feel that more affordable alternatives can achieve similar results for casual users.
User Support
75%
25%
The support provided by Yubico is generally appreciated by users, with many finding their customer service team helpful when resolving setup issues. For those who encounter trouble, it’s comforting to know assistance is available.
A few users express frustration with slow response times from customer support. Some have reported difficulty in getting quick assistance for urgent issues, leading to a less-than-ideal experience when seeking help.
Price-to-Performance Ratio
87%
Users feel the device offers good value for money, especially considering its robust security features and long-lasting durability. The ability to secure multiple accounts across devices justifies the cost for many buyers, especially those serious about their online security.
Some users mention that while it offers strong performance, the price can be a bit high for casual users who may not need all of the advanced security features. For those just looking for basic 2FA, the investment might not seem as necessary.

Suitable for:

The Yubico YubiKey 5Ci is ideal for individuals who prioritize security and use multiple devices. Tech-savvy users, such as professionals in IT or security-conscious individuals, will benefit from its robust, multi-protocol support for services like Google, Microsoft, and password managers. If you frequently switch between devices like Android, iPhone, and PCs, this key offers seamless compatibility, ensuring you stay protected without hassle. Its compact and durable design makes it a great choice for anyone who needs reliable, no-maintenance two-factor authentication on-the-go, including those who travel or work across different platforms and devices.

Not suitable for:

However, the Yubico YubiKey 5Ci may not be the best fit for casual users who are only looking for basic account protection. If you don’t regularly use multiple devices or advanced MFA protocols, the price and complexity might not justify the investment. Additionally, users unfamiliar with MFA or security keys may struggle with initial setup, especially when integrating with less common services. Those seeking a more budget-friendly, straightforward security solution may find simpler alternatives more appropriate. If you need features like Bluetooth connectivity or more streamlined setup, this device might feel limiting.

Specifications

  • Connectors: Features dual connectors for USB-C and Lightning ports, ensuring compatibility with a wide range of devices.
  • Authentication Protocols: Supports multiple protocols including FIDO2, U2F, Smart Card, and OpenPGP for enhanced security.
  • Power Source: Operates without batteries, offering a hassle-free experience with no charging required.
  • Durability: Built to be water-resistant and crush-resistant, ensuring longevity and reliability in harsh environments.
  • Dimensions: Compact design with dimensions of 1.59 x 0.47 x 0.2 inches, making it easy to carry and use.
  • Weight: Weighs just 0.106 ounces, making it lightweight and portable for everyday use.
  • Compatibility: Compatible with major services like Google, Microsoft, and various password managers for seamless integration.
  • Security Features: Offers hardware-based two-factor authentication (2FA) for secure login to supported online services.
  • Platform Support: Works across multiple platforms including Windows, macOS, Android, and iOS devices.
  • No Network Required: Does not require network connectivity to function, providing offline authentication.
  • Operating Temperature: Operates in a wide temperature range, suitable for use in both cold and warm environments.
  • Manufacturing Origin: Manufactured in Sweden, ensuring high-quality craftsmanship and design.
  • Backup Key: Supports registering a backup key for additional security in case the primary key is lost or damaged.
  • Key Registration: Easy setup for registering the key with various services, typically through a simple plug-and-play process.
  • Tamper Resistance: Designed to resist tampering and physical damage, providing long-term security.
  • Multi-device Usage: Ideal for users who need to access secure accounts across different devices, such as phones, tablets, and computers.
  • Support for MFA: Supports multi-factor authentication (MFA) for an extra layer of security beyond passwords.
  • Smart Card Support: Supports Smart Card functionality for secure authentication in enterprise environments.
  • Warranty: Comes with a standard warranty, providing assurance against defects in materials and workmanship.

FAQ

To set up this YubiKey, simply plug it into your device's USB-C or Lightning port, depending on the model you have. Follow the on-screen instructions in your service's security settings (like Google or Microsoft) to register the device for two-factor authentication (2FA). It's a quick, straightforward process that requires no additional software installation.

Yes, this device is compatible with both iOS and Android smartphones, as long as they support USB-C or Lightning ports. This makes it a great option for users who need to secure their accounts across multiple devices.

The Yubico YubiKey 5Ci stands out with its dual connectors for USB-C and Lightning, allowing for seamless cross-device compatibility. It also supports a wide range of protocols, including FIDO2, U2F, and Smart Card, offering flexibility in securing online accounts across various services.

No, the Yubico YubiKey 5Ci operates without batteries, so there's no need to charge it or worry about battery life. It's ready to use as soon as you plug it into your device.

Yes, the Yubico YubiKey 5Ci is built to withstand harsh conditions. It's water-resistant and crush-resistant, making it a reliable choice for users who need a durable security key that can handle everyday wear and tear.

Yes, this MFA device is compatible with many popular password managers like LastPass and 1Password. You can use it to securely log into your password vault or other online services that support two-factor authentication.

If you lose your Yubico YubiKey 5Ci, it’s recommended to set up a backup key in advance. Many services allow you to register multiple keys or backup authentication methods, such as phone numbers or apps, so you can still access your accounts.

The Yubico YubiKey 5Ci offers a high level of security, providing physical 2FA via hardware-based encryption. It's more secure than SMS or app-based 2FA because it requires possession of the actual device to authenticate, making it more resistant to phishing and man-in-the-middle attacks.

If you encounter issues setting up this device, first ensure you're using the correct port (USB-C or Lightning) and check that your device's software is up to date. You can also visit Yubico's support page for troubleshooting guides or contact their customer support for further assistance.

While the Yubico YubiKey 5Ci supports a wide range of services like Google, Microsoft, and many password managers, not all websites support it. Be sure to check whether your preferred services are compatible with FIDO2, U2F, or Smart Card protocols before purchasing.