3 FIDO 2 Factor Authentication Security Keys for iPhone & Android

We all know the importance of protecting our important online accounts with multi-factor authentication. In fact, many of your favorite websites already support some form of 2FA. These FIDO certified 2-factor authentication security keys for iPhone and Android can protect your credentials against theft:

YubiKey 5Ci: a 2-factor authentication security key for iPhone, Android, and PC with dual connectors (USB-C & Lightning). It supports FIDO compatible applications on your devices.  This security key also supports OpenPGP, Yubico OTP, and other protocols.

GoTrust Idem Key: a FIDO U2F and FIDO2 L2 certified security key with NFC support. It can can be used with iOS and Android devices as well as Windows, Linux, macOS, and Chrome. You can use it to access Facebook, Google, and other accounts.

Thetis FIDO U2F Security Key: a Bluetooth enabled 2-factor authentication security key that works with iOS and Android devices. It can be used  withwebsites that supports U2F protocol.

Have you found other iOS compatible 2FA security keys? Please share them here.