Remember that old clubhouse in the vacant lot of your childhood neighborhood that the local kids hand-built from scrap wood and castoff rusted sheet metal, with "KEEP OUT" scrawled in red paint on a sign nailed over the threshold, which you could only cross by whispering the secret phrase of the day?
OK, my childhood never really had that, either. But as this millennium's second decade blazes to a close and the tangible machinery of my life increasingly vanishes into the vapory world of binary code, it feels like several new secret forts pop up every month. Not only does each online account demand its own covert entry key, but with cybercriminals stomping on the gas for data breaches every year, it's becoming more and more important to be able to create unique, hard-to-crack passwords for each one. It's a tall order to balance security with memorability—let's explore how to do it!