More: Keep your data safe with the best mobile VPN appsĪ YubiKey 5ci with a MacBook Pro.

We could register an older USB-A YubiKey with GitHub without trouble. Yubico had told us that GitHub recognized the 5ci on iOS, but we couldn't get GitHub to recognize the key on a USB-C-enabled Windows PC, even though we were using the Brave web browser as Yubico suggested. (It doesn't seem that Apple supports the FIDO2 standard that many websites implement for security keys.) That's actually fine, as the list of online services that supports the YubiKey 5ci on iOS is still pretty small and doesn't yet include Google. We had no trouble registering the 5ci to our Google account using the USB-C port on a Windows PC, but when we tried to log into our Gmail account on iOS, the Google Smart Lock app on iOS, required for Google 2FA on iOS, didn't recognize the security key.

Unfortunately, we found that support for the 5ci on iOS was still pretty limited.

We got a YubiKey 5ci in advance and borrowed an iPhone to see how well the two devices play together. Can a free iPhone VPN match up to a paid iPhone VPN?.

Yubikey usb to lightning adapter