Court reporters have used stenography for over a century to write at over 200 words per minute, faster than most people speak

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Shorthand is an abbreviated symbolic writing method that increases speed and brevity of writing as compared to a normal method of writing a language. The process of writing in shorthand is called stenography, from the Greek stenos (narrow) and graphē or graphie (writing).

via OP link and Wiki on “Shorthand”

edit: There’s also another project called the “Charachorder” for example: https://www.charachorder.com/