Cloudflare has partnered with YubiKey to offering their customers the YubiKey 5C NFC for $11.60 (regularly $55) or the YubiKey 5 NFC for $10 (regularly $45) when you claim the offer in your account. It’s Free to Join Cloudflare. Shipping is also Free. To get this deal, sign up (it’s Free) or login to your Cloudflare account and then claim the Yubikey Security Keys offer. The coupon code will be emailed to you from directly from Yubico in 1-3 days. Customers can purchase up to 10 keys. For larger organizations there is a second offer to purchase the YubiEnterprise Subscription for 50% off the first year of a 3+ year subscription. For the YubiEnterprise Subscription there are no limits on the number of security keys.
YubiKey 5 Series works with the most web services and includes their most feature-rich security keys that prevent account takeovers and offer one-tap login.