Tumblr.com: Your parents don’t understand you. Nobody does.

So what should you do if you need to win an argument on a plane, as if your dog’s life were on the line? As a former flight attendant, here’s the advice I’d offer.

The thought of a group of 6-year-olds being instructed to throw books at a man armed with an AR-15 is exceedingly dark and has more than one writer invoking the duck-and-cover era of school civil defense as a parallel. How well does that parallel work? How did Americans come to accept the idea that their kids would practice hiding under their desks from a nuclear attack? And how did those kids feel about those drills? As it turns out, the experience turned some of them—kids and parents—into radicals.

Secure: Prevents unauthorized access by requiring the physical presence of the key to log in on that device
Easy to use: Plug it in and touch the gold button or edge; no codes to type or apps to install
Affordable: The same YubiKey can be used with nearly unlimited services
Durable: Rugged, water-resistant, no batteries or moving parts
Everywhere: Use it on Microsoft Windows, Mac OS X, Linux, and Chrome OS for Chromebooks
Convenient: Fits nicely on a keychain, in a wallet, or inside a USB port