Skip the base32 because it's cargo culting and go with a higher base. The premise of crockford's chosen exclusions is fundamentally flawed. In arbitrary fonts,

Skip the base32 because it's cargo culting and go with a higher base. The premise of crockford's chosen exclusions is fundamentally flawed. In arbitrary fonts, symbol collisions are arbitrary. There are plenty of fonts where any of 5 and S, 2 and Z, V and U, G and 6, 8 and B, and 9 and g are confusable. Likewise vv and w, nn and m.