The Number Rhyme system is one of the easiest ways to remember short sequences of numbers. It requires almost no preparation, unlike most of the other techniques for remembering numbers. I find it useful for things like ATM PINs.

For example, suppose you decide to change your primary checking account PIN. PINs are almost always four digits. Most interesting in this case is the fact that a few weeks’ of use will wipe out any need for artificial memory tricks. What’s really needed is a simple technique to get through the couple of weeks between when you get the new PIN and when frequent use makes the memory naturally permanent. The Number Rhyme system may be just the trick.

A few key concepts are worth a brief review. First, numbers are too abstract to be easily memorized. Therefore all memory techniques for numbers rely on converting abstract numbers into something concrete. More