It would be nice to have Opera work nicely with fido u2f security keys. Curently I have to use Firefox.

@jimunderscorep

Well, I did a little more research. The supported browsers are Firefox and Chrome.
They support WebAuthn, I guess Opera does not.

The (pem) files are the different certificates stored on the HyperFIDO U2F security keys. I suppose in case it get dammaged or lost.

@jimunderscorep I did not have to do anything for Firefox, it just worked. There is a setup for Ubuntu in general which I did, here: link text
From your terminal:

$ sudo curl https://hypersecu.com/downloads/files/configurations/70-u2f.rules > /etc/udev/rules.d/70-u2f.rules
$ sh -c /etc/udev/rules.d/70-u2f.rules

then restart your computer

For more details on setting up U2F security key for Linux, please read the FAQ: How do I set up my Linux system to use my HyperFIDO U2F security key?

It would be nice to have Opera work nicely with fido u2f security keys. Curently I have to use Firefox.

I have used this for many years with great success. Lately I have been needing a queued list, one at a time to download. Perhaps up to 5 or 10. It would be nice to have a feature like this. Because of my need find other alternatives.

is a person able to queue up a list? say five or so.