One would hope that verification codes would be extremely random. More randomness makes it harder for a malicious entity (person or computer) to guess the code. Less randomness makes it easier. With all the Two-Factor Authentication (2FA) out there, we hope there is enough randomness in these methods to make them unguessable by someone attempting to get into our accounts. But, like all security technology, the hackers get better and protections get easier to break over time.
There is a current temptation to record the codes my generators provide to see if there is a pattern. At least in the back of my head it “feels” like there might be one. My intuitions sometimes turn out true (confirmation bias) and usually do not (reality). If little ole me can see the pattern, then I am sure smarter people than I have seen it as well and maybe even have a way to anticipate the codes.
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