Yubikey not found on MacOS 10.10

[geoaxis]

I installed using pip. Gui comes fine but it cannot find YubiKey. Yubikey can be found by manager and personalisation tool. I have used the tool to program challenge response and it still does not detect. I used both protected and unprotected modes.
Thanks

[ldrumm]

Thanks for the report.

Unfortunately I don't have access to a Macintosh, so I don't really have much to go on.
However, as with most installation issues, my hunch here is that this is probably related to raw access permissions for usb devices.

If usb is working fine, the running python2 -c 'import yubico; print(yubico.find_yubikey())'
from a terminal should return something like:

<YubiKeyUSBHID instance at 0x7f6a85ad3a70: YubiKey version 2.4.2>

If instead you get a backtrace with a permissions error, then I don't think there's anything we can do unless Apple provide a way to get raw access these devices. See the bug against python-yubico on which we rely for yubkikey handling. The root cause appears to be that Mac OS X claims the USB as an HID device and won't release it for raw access once claimed.

However, if you don't feel the above applies to you, then let me know the output of the above command and we'll work toward a fix