The virtue is, software has some idea what a UUID is. There's a mostly-random version which is also understood. If you want to start doing your own thing, a ra

The virtue is, software has some idea what a UUID is. There's a mostly-random version which is also understood. If you want to start doing your own thing, a random number is good. It's hard to get a good random number. I suggest starting with, hey you guessed it, the UUID library.