The USB-C connection of the YubiKey 5Ci works with a wide range of services including: Google, Microsoft Accounts, Dropbox, Facebook, Twitter, GitHub, Dashlane, Keeper Security, and more. Support for the Lightning connection of the YubiKey 5Ci is currently emerging with a growing number of iOS apps, including 1Password, Bitwarden, Dashlane, Keeper Security, LastPass, and Okta, as well as a number of services through the Brave browser. Supported logins on the Brave browser include Twitter.com, Login.gov, GitHub.com, Bitbucket.org, and 1Password.com. Learn more about the services that work with YubiKey 5Ci's Lightning connector in our Works with YubiKey catalog.