Yubikey sends command after enabling

[indolering]

For some reason, when I re-enable the Yubikey it usually fires off a command automatically.

[pallotron]

if yubiswitch disables the key and you happen to touch it you'll notice the green light turning on. it won't write anything but as soon as you enable it it will flush its buffer out... this is "normal behavior"

[indolering]

Then, from a usability perspective, you should capture that initial output and delete it.