Using Yubikey introduces the risk of the rightful owner of account is prevented access. It is a problem that Yubikeys cannot be duplicated for backup. They are so secure that even the owner of an account can be locked out, lol. That's not good. In case of lost key or hardware malfunction there is no way to access your account. Unfortunatly two different keys often cannot be registered for the same access. Using Yubikey introduces the risk of the rightful owner of account is prevented access.

Ordered a product 17 days ago Ordered a product 17 days ago, put in an inquiry at the 2 week mark as to its whereabouts and still no updates. For a product thats advertised to arrive in 5 days. no updates/ apologies, its not really what you would expect. Feels more like a scam.

I did my order on December 7. I did my order on December 7. To date, I still have no idea where my order is and every time I contact the support they only send me an automatic answer where they talk about a generic delay. UPDATE: I've been refunded and I bought it on Amazon (delivered in 2 days).

Silence. Ordered on October 13th, received a tracking code from UPS and since several weeks no news! I will update this notice if I ever receive my order.

Non Existent Customer Service - Also Just Plain Rude Shockingly bad, full-friction customer journey. Customer Service is non-existent for all practical purposes including initial purchase. I wanted to spend 15 minutes buying these security keys - I'm at the end of day 2 now and still haven't made the freaking purchase due to non-existent help from Yubico and their so-called resellers in the UK. The resellers don't actually sell anything, they refer you on to someone else. If you want to get a freaking headache then please go ahead and start your journey with these unhelpful, rude, time-wasting, arrogant people.