Default Yubikey dev permissions

[Tom Jones]

On Tue, Feb 26, 2019 at 05:25:56PM -0500, Farhan Khan (F8DA C0DE) via freebsd-hackers wrote:
> Hi all,
> 
> I am experimenting with a Yubikey, a consumer grade smart card that stores certificates and passwords. I found that running 'gpg --card-status'
> does not work without root access. By default /dev/usb/0.2.0 (my yubikey) permission is 0600, owned by root. Without changing these permissions, the normal users would not be able to access the device.
> 
> Of course making the permissions too broad leaves it open to a rogue user with any terminal access (ie, via SSH). However, it is still protected by a 6-digit pin that will lock out after a default of 3 failed attempts.
> 
> Is it worth opening up the default permissions? Thoughts?

I use pcscd (pcsc-lite in ports) with ccid to use my yubikey for gpg
operations. 

- [tj]