Disk decryption passphrase

[FranklyFlawless]

@veleno

I’m curious to know why, LUKS, is limited to only numbers?
Someone could explain me it, please, in a layman terms ?

The LUKS encryption passphrase is not limited to only numbers:

@irvinewade

The only restriction on the disk encryption passphrase is that it should be printable ASCII characters only. It is not restricted to digits only.