But more often than not, the passcodes that appear in my Google Authenticator app seem tailored to reduce the cognitive burden of storing them in my working memory, the short-term storage bin our brains use to stash information for a few precious seconds before forgetting it forever. ![]() Occasionally I'll get lemons, like 031 472 or 253 741, which are less appealing in an (admittedly vague) aesthetic sense and more difficult to remember. Elements like single-digit repeats (111 293 134 441) multi-digit repeats (112 222) palindromes (353 595) ascending or descending sequences (345 564) repeating number order (618 514) and combinations thereof (876 565). It began with an observation: My codes often seem to include elements that make them easier to remember. But for some time now, I've harbored a pet conspiracy theory about those codes: Maybe they aren't as random as we're led to believe. ![]() ![]() You know two-factor authentication tokens, the ephemeral, six-digit numbers you use as a second layer of security when logging into, say, your email? Those constantly updating, randomly generated numbers are one of the easiest ways to protect your accounts from being hacked.
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