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Re:Ask HN: Alternatives to Yubikey? by dchest on Monday June 12, 2017 @04:12PM (#14540667)
I have two of their U2F and if the OP's problem is sales and support, I'm not really sure Nitrokey are without issues as well:

1) Ordered 2, received 1. Thankfully, support quickly sent the second one once I wrote to them.

2) Now they only work when I plug something else to another port to my Mac (no such problem with Yubikey). No reply since April 29: https://support.nitrokey.com/t/nitrokey-u2f-issues-in-macos-...

Edit: I now noticed they have a different U2F version — the previous one was a card that you fold to make it into a USB dongle.

Re:Ask HN: Alternatives to Yubikey? by jans23 on Wednesday June 21, 2017 @01:11AM (#14600824)
Feedback from Nitrokey (I'm working with them):

1) We are changing our warehouse process, adding a technical QA step, so that such mistakes won't happen anymore. Sorry for the trouble.

2) As you noticed, the former U2F is going to be replaced by a new FIDO U2F device which contains a full USB plug for better reliability, is more durable and has a touch button.

Re:Ask HN: Alternatives to Yubikey? by dchest on Wednesday June 21, 2017 @04:21AM (#14601910)
Great, thank you!