In general, a “mnemonic” is a tool to help remember something which is hard to remember “directly”. Mnemonics can use various techiques or associations, can be a song, rhyme, acronym, image, or anything which is easier to remember than original information (https://en.wikipedia.org/wiki/Mnemonic).
Mnemonics in PrivMX are used for representing (private) Recovery Keys which can be used instead of usernames and passwords for logging in (click “Alternative login” on your login screen). All PrivMX users can view their Recovery Keys in the PrivMX client application, print them or write them down somewhere. But… keys originally looks like this:
which is not very convenient to rewrite or remember. A mnemonic generated for this key seems nicer:
change want donate build wish derive cluster armed chicken chest thing number elbow quarter outdoor sense good snack mercy judge wall tank biology turkey
PrivMX uses BIP-39 Bitcoin-related specification to create and decode mnemonics for Recovery Keys. We use a configuration with dictionary of 2048 words where each word encodes 11 bits of information.
For more information about Recovery Keys, please read PrivMX passwords and keys.