These things work in the same way that bicycles or pizza cutters work. They work in certain situations, but they aren’t for everything.
If you want to remember some long numbers, they help so much. Either make up a story, or notice funny patterns inside of the number. For instance, my credit card has 8008 80 in it and that’s a boob and a half.
Still, these things take practice like anything else, so I guess the trick is to work on them. You can work on them with little extra time, but they take up a lot of effort unless it’s something important. Eh, they help you be more aware, which is the real secret… Ergh. Too bad there’s no worth it sort of button.
