Write down your passwords on a piece of paper? Are you kidding? Aren't those supposed to be committed to memory and never to be left a trace on paper?
That's what the mandatory information security courses teach us (I had to take one last month). Well, let's consider the downside of what we have been taught: what if you forget your password of your router? You might say, "No problem! there is reset button on the rear panel". Reset it and your settings are gone! Don't you remember how many times you had to sweat yourself and were about to get a heart-attack when you could not log into your online credit card account thinking that somebody must have gotten an access to it? Well, here's a solution from Mac: the Mac cheat sheet:
So fill out the cheat sheet, stash it where you and only have an access, and sleep well - never ever worrying about what if you forget your password.
Whether your Mac asks you for certain information or you're seeking help from Apple or an Apple Authorized Service Provider (AASP), there may come a time when you need to have your various passwords, dial-up numbers, mail server addresses, email addresses, hardware specifications, serial number, and other information handy. And then you discover that you've either forgotten or misplaced this information