There are 28 bytes of persistent memory. To save a name, use 5 bits per letter. That means 8 characters take 40bits = 5 bytes.
Viewing post in A way to save 8-character strings to persistent memory!
That certainly would be ideal, but unfortunately I'm not currently familiar or comfortable enough with binary operations to make it so. Even in its original PICO-8 form it could be taken from 128 bits down to the same 40. I know it's a terrible waste of space as it is now but I never pretended I really knew what I was doing with TIC-80 (or PICO-8 for that matter). Maybe one day it'll be that efficient but even if it's a jumping-off point for someone more skilled then it's done its job.