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Overview

Keep your accounts secure with the YubiKey 5Ci, a compact and versatile multi-factor authentication (MFA) security key. Compatible with Android, iPhone, and PC, this device offers strong protection against hackers. With dual connectors (USB-C & Lightning), it works seamlessly with your devices and supports multiple authentication protocols like FIDO2, OATH-TOTP, and more. Waterproof, crush-resistant, and tamper-proof—trust the YubiKey to keep your digital world safe.

Yubico - YubiKey 5Ci - Multi-Factor authentication (MFA) Security Key for Android/PC/iPhone, Dual connectors for Lighting/USB-C

Model: 5Ci
Web Code: 19206750
Sold and shipped by | 4.1 seller rating (311 reviews)

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Available for deliveryAvailable online only

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Seller Return Policy

Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

Protect your online accounts from hackers and unauthorized access with the YubiKey 5Ci, a versatile, easy-to-use, and highly secure multi-factor authentication (MFA) solution. Whether you're using an Android, iPhone, or PC, this YubiKey ensures you are always just a simple plug-in away from safe access to your most important accounts.

The YubiKey 5Ci features dual connectors—USB-C and Lightning—making it compatible with a wide range of devices, including the latest iPhones, Android phones, and laptops. It supports a variety of authentication protocols, including FIDO2 (hardware-bound passkey), OATH-TOTP (one-time passwords), OpenPGP, and Smart Card (PIV). This makes it a perfect solution for securing everything from your Google and Microsoft accounts to password managers and enterprise systems.

Built for reliability and durability, the YubiKey 5Ci is tamper-proof, crush-resistant, and waterproof, ensuring long-lasting protection. No batteries are needed, and it operates offline, so there’s no reliance on network connectivity. Simply plug in the key to authenticate, and you’re done. Plus, with its compact design, it’s easy to carry around wherever you go, ensuring constant access to your accounts with complete peace of mind.

It’s highly recommended to have 2 YubiKeys—one as a primary key and the other as a backup—so you never lose access to your accounts.

Key Features:

Dual Connectors (USB-C & Lightning): Compatible with Android, PC, and iPhone devices.

Multi-Protocol Support: FIDO2 (hardware bound passkey), OATH-TOTP, Smart Card (PIV), OpenPGP, and more.

Tamper-Proof & Durable: Crush-resistant, water-resistant, and highly secure against tampering.

No Batteries or Network Needed: Easy to use without needing batteries or relying on network connectivity.

Secure Manufacturing: Produced in the USA & Sweden, ensuring top-notch quality and security.

Backup Key Recommendation: Have two YubiKeys for added security, ensuring continuous access even if the primary key is lost.

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

Shipping Charges

Free standard shipping on all orders.

Processing Time

Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.

Shipping Area Restrictions

Shipping is not available in the following areas*:
  • No restrictions in Canada
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
Product Category
Computer components
Return/Exchange Period
30 days
Condition
Unopened

We can only acceept returns that are in their original packaging and do recommend customers check manufacturer's warranties for exclusions.

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