> For the complete documentation index, see [llms.txt](https://key4.hideez.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://key4.hideez.com/passwordless-sign-in-and-2fa.md).

# Passwordless Sign-In and 2FA

- [Pairing Hideez Key with Windows](https://key4.hideez.com/passwordless-sign-in-and-2fa/pairing-hideez-key-with-windows-10.md): Hideez Key –  Pairing with Windows
- [Using Hideez Key 4 with macOS and Linux via USB](https://key4.hideez.com/passwordless-sign-in-and-2fa/using-hideez-key-4-with-macos-and-linux-via-usb.md)
- [Adding Hideez Key 4 to your Google Account on macOS and Linux](https://key4.hideez.com/passwordless-sign-in-and-2fa/using-hideez-key-4-with-macos-and-linux-via-usb/adding-hideez-key-4-to-your-google-account-on-macos-and-linux.md)
- [Adding Hideez Key 4 to your Microsoft account on macOS and Linux](https://key4.hideez.com/passwordless-sign-in-and-2fa/using-hideez-key-4-with-macos-and-linux-via-usb/adding-hideez-key-4-to-your-microsoft-account-on-macos-and-linux.md)
- [Pairing Hideez Key with Android devices](https://key4.hideez.com/passwordless-sign-in-and-2fa/using-hideez-key-with-android-devices.md): Hideez Key – Using with Android devices
- [Using Hideez Key with iOS devices](https://key4.hideez.com/passwordless-sign-in-and-2fa/pairing-hideez-key-with-macos-ios-devices.md): Hideez Key – Using with iOS devices
- [Setting up passwordless logins and 2FA](https://key4.hideez.com/passwordless-sign-in-and-2fa/setting-up-passwordless-logins-and-2fa.md): Hideez Key – Passwordless authentication and 2FA