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xkcd #2912: Cursive Letters
(imgs.xkcd.com)
Alt text:
๐ ๐ฝ๐ฑ๐ฒ๐ท๐ด ๐ฌ๐ช๐น๐ฒ๐ฝ๐ช๐ต ๐ ๐ฒ๐ผ ๐น๐ป๐ธ๐ซ๐ช๐ซ๐ต๐ ๐ฝ๐ฑ๐ฎ ๐ถ๐ธ๐ผ๐ฝ ๐ฏ๐พ๐ท ๐ฝ๐ธ ๐๐ป๐ฒ๐ฝ๐ฎ, ๐ฝ๐ฑ๐ธ๐พ๐ฐ๐ฑ ๐ต๐ธ๐๐ฎ๐ป๐ฌ๐ช๐ผ๐ฎ ๐บ ๐ฒ๐ผ ๐ช๐ต๐ผ๐ธ ๐ช ๐ผ๐ฝ๐ป๐ธ๐ท๐ฐ ๐ฌ๐ธ๐ท๐ฝ๐ฎ๐ท๐ญ๐ฎ๐ป.
At one time illiterate people could just mark an X. The security of a signature isn't really in it's uniqueness or it's relationship with your name. Security of a signature is down to the fact that you could to prison for forgery if you fake someone else's signature.