Rather Dense

[Mikkel]

How about cuneiform?

^-.-^

Runes.
If nothing else you could use this quote:

They were invented, it is said, by Odin himself. Look there, and wonder, impious young man, and admire these letters, the invention of the Scandinavian god!

[Andara Bledin]

Runes.

I used to use Tolkien runes (taken from The Hobbit) to write my social studies notes. I had to make up a number system to go with.

^-.-^

[Chromatix]

Hmm, there is apparently an official series of numeric Tolkein runes. I forget which base they're in, but you can ignore excess digits if you want to simplify.

There are also official and semi-official methods of writing English in runes. So the question is, should you use the written runes (ie. cursive form) or the engraved ones?

[Rapscallion]

Egyptian Hieroglyphics....problem solved?

I know a guy who wrote a book about one of the runic languages - Ogham, I think.

Rapscallion