Finding a way to get better sleep is, of course, the proper answer to this problem, however there are mant situations where better sleep is elusive, so...
As a former sender of six digit codes, I worked hard to make them visually (and auditorially) appear to be two three digit codes; we thought that would make it easier for people to process. If you make a habit of processing the codes as two three digit codes, it might help when you're over tired.
As a former sender of six digit codes, I worked hard to make them visually (and auditorially) appear to be two three digit codes; we thought that would make it easier for people to process. If you make a habit of processing the codes as two three digit codes, it might help when you're over tired.