My handwriting is exceedingly bad, and it gets worse every time I do it. It's sort of a feedback loop; my handwriting is bad so I type everything, and since I never practice my handwriting it gets bad. I think if someone made a font based on my handwriting it could be used as a cryptographic hash.
I do like the idea of it though; even though I don't think it's less personal to type a message than handwrite it, it feels less personal. Having a font based on handwriting might help with that.
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