OnlyKey FIDO2 / U2F Security Key and Hardware Password Manager | Universal Two Factor Authentication | Portable Professional Grade Encryption | PGP/SSH/Yubikey OTP | Windows/Linux/Mac OS & Android

OnlyKey FIDO2 / U2F Security Key and Hardware Password Manager

The OnlyKey is a compact device designed to provide two‑factor authentication and secure password management in a single form factor. It implements the FIDO2 and U2F authentication protocols, enabling it to work with any service that accepts those standards. The hardware key offers a secure way to confirm a user’s identity without relying on software alone.

Beyond authentication, the OnlyKey includes encryption capabilities that support PGP, SSH, and Yubikey One Time Password (OTP) generation. These functions allow a user to encrypt files, sign messages, or create time‑based one‑time passwords directly on the device, keeping private keys offline and reducing exposure to malware.

The device is portable, making it suitable for on‑the‑go use. It connects through a standard USB interface, allowing it to be carried in a pocket or bag. The compact form factor means it can be inserted into laptops, desktops, or other devices that accept USB security keys.

Compatibility extends across major operating systems. The OnlyKey can be used with Windows, Linux, macOS, and Android platforms. This cross‑platform support means a single key can manage authentication and encryption tasks on a range of devices, from personal laptops to mobile phones.

Typical use scenarios include logging into web accounts, signing into virtual private networks, or accessing secure servers via SSH. The key’s PGP support allows for encrypted email, file encryption, and signing of documents. When combined with OTP generation, it can be used for services that require a one‑time password in addition to a password and a second factor.

As a hardware password manager, the OnlyKey stores credentials securely within the device. Users can store login information, retrieve it with a physical touch, and export or import credentials using supported software. The offline storage model reduces risk from remote attacks.

Because the device supports recognized security standards, it can be integrated into existing security frameworks. Administrators and users can set up policies that require the key for access to specific resources, thereby adding an extra layer of protection without requiring changes to existing workflows.

In summary, the OnlyKey delivers a single, physical token that fulfills multiple security needs: two‑factor authentication via FIDO2/U2F, password management, and encryption for PGP, SSH, and OTP. Its cross‑platform operation and portability make it a convenient choice for individuals and teams that need a versatile security tool.