Fonts are a system level item. If you wanted to try and ship fonts, you would need to pre-install the fonts as root ( or System Administrator ), and that would include include running any programs needed to properly incorporate the fonts into your system. It isn't easy.

The only possible thing you could do, is make images of each letter, base64encode them, and do your work on a canvas, where you can intercept the keypress binding, then insert your image instead of the letter. It wouldn't be scalable, and backgrounds may be a problem.