How does Braille Pattern obfuscation work according to the article?

Braille Patterns consist of 64 distinct patterns mapped to 256 Unicode positions. In the obfuscation method described, each character to be hidden is first converted to its Unicode code, then transformed into a Braille symbol using either single or double Braille characters. For example, lowercase letters use a single Braille code, while uppercase letters and digits use two Braille characters with a fixed prefix (U2820 for uppercase, U283C for digits). The article notes that the mapping can be randomized to increase the difficulty of analysis, deviating from standard Braille grade 1 rules.