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Protecting your online accounts is more important than ever, and security keys are a reliable way to enhance your digital security. If YubiKey isn’t the right fit for your needs or you’re exploring other options to secure your data, this guide will introduce you to some excellent alternatives. From versatile designs to advanced features, we’ll help you find the perfect security key for your requirements. The 6 best YubiKey alternatives in 2025: Google Titan – Offers FIDO2 and WebAuthn support with the ability to store over 250 passkeys Token2 – A versatile option with FIDO2 support, NFC compatibility, and biometric security features Nitrokey – Open-source security keys with USB-C and NFC options, supporting FIDO2 and TOTP protocols OnlyKey – Durable keys with built-in PIN entry and support for FIDO2, OTP, and TOTP SoloKeys – Open-source keys with customizable designs, supporting FIDO2 and U2F standards Thetis – Affordable keys with USB-A, USB-C, and NFC options, including biometric models for extra security Whether you’re prioritizing compatibility, price, or specific functionality, our list of the 6 best YubiKey alternatives will ensure you make a well-informed decision. Let’s dive right in! Exploring the 6 best YubiKey alternatives in 2025 Without further ado, let’s take a closer look at each of the YubiKey alternatives we have selected. Our list covers security keys with a variety of form factors, connections, and authentication protocols. We’ve also made sure to include open-source alternatives to YubiKey. 1. Google Titan – FIDO2 and WebAuthn support able to store 250 passkeys The Google Titan series of security keys is designed to enhance online security through strong two-factor authentication. These devices support FIDO2 U2F and FIDO2/WebAuthn standards and can store over 250 unique passkeys, which is a capacity higher than many competitors offer. Although the Google Titan key lacks a fingerprint reader, it includes a tactile button that users must press to confirm logins, enhancing security without…