Just received my Yubikey 4 (although Wired branded, not Arstechnica, which is a bit disappointing, but hardly the end of the world). I immediately tried to used the coupon to get a second Yubikey,but ...
I was not able to take advantage of the coupon for discounted yubikeys when I first started my subscription. I am now, however I'm not sure where the coupon code is. Was it printed on paper sent with ...