> Can't you memorize any amount of numbers with mnemonics? I remember multiple 16 digit CC numbers using it. It gets progressively harder with length, and take

> Can't you memorize any amount of numbers with mnemonics? I remember multiple 16 digit CC numbers using it. It gets progressively harder with length, and takes time. (As I mentioned, spaced over days and weeks). If you want to memorize something in the short term, 7±2 chunks is often the limit. This is why passphrases are pushed - you can easily recall 7 easily memorable "chunks" that when translated into bits contain much more than seven bits of information.