for a geeky (computer geeky) person--Knitty.com has a binary scarf..(you could have it spell out what ever you want.. in binary!)
and there is the home of
mathematical knitting
which has a link to the essay, Knit an Purl meet my friends Hex and Bin --and its has a down loadable script for changing a letter (A say) into Ascii code (65(hex) and then changing the hex into binary (1's and O's) and then you can :
1--knit the 1 and 0's into words (via the Knitty scarf)
or
2--knit the 1 and 0's as knits and purls and make a textured design that is really binary code (include a translation if desired)
or
3 use this info in some other way! (fair isle? )
very geeky, very simple, very versital, (and it will work better than the common alphabet if you double knit!)