IBM SHARK Shorthand: “The following factors make SHARK shorthand particularly powerful.
Memorability: A person’s ability to recognize, memorize and draw patterns is remarkable. SHARK shorthand capitalizes on this remarkable human capability. Gesturing patterns with a stylus is particularly fluid, dexterous and fun.
Pattern Recognition: SHARK shorthand uses modern digital processing capability to compute the statistical constraints represented by the legitimate sokgraphs on the stylus keyboard. Our pattern recognition technology takes advantage of these constraints and gives the user the maximum flexibility in sokgraph gesturing. An intended word can still be entered although irrelevant letters between intended letters are crossed or even if some of the letters in a word are missed in the stylus trace on the keyboard.”
This is the site discussed in the post a bit further down.