# Braille (点字)

> The tactile writing system Louis Braille designed at fifteen: every letter in a two-by-three cell sized to a fingertip — a rare invention where ergonomics and typography coincide exactly.

- IndexStyle No.430 — https://indexstyle.org/styles/braille
- Kind: Style · Family: Symbol Systems · Era: 1824–
- Mood: Trust, Intimacy, Technology
- Color cues: #e9e6dd / #67635d / #171615 (cues taken from reference works, not a fixed palette)

## Defining characteristics

- The 2x3 dot cell
- Dimensions fit to the fingertip
- Left-to-right tactile reading
- The materiality of embossing

## Best used for

- Comparing primary sources and canonical works
- Extracting principles that transfer to other media

## Research method

This entry records a historical style; derive the treatment from its sources rather than a fixed recipe:

- Observe the letters, signs and scale of reference works
- Extract the one structure that governs gaze and information
- Verify the materials and behaviors specific to era, region and process

## What to avoid

Don't reduce it to surface signs. Verify the context of era, region, technology and makers.

## Application checklist

Before calling a piece an application of this style, check it against the defining characteristics:

- [ ] The 2x3 dot cell
- [ ] Dimensions fit to the fingertip
- [ ] Left-to-right tactile reading
- [ ] The materiality of embossing
- [ ] At least one reference work below has been studied directly
- [ ] The caution above ("What to avoid") has been addressed

## Related styles

- **Emoji (絵文字)** — The shared sign system that began with Shigetaka Kurita's 176 12x12-dot glyphs for i-mode. MoMA acquired the original set — the pictogram lineage extended into conversation itself. → https://indexstyle.org/styles/emoji
- **Pictogram System (案内用ピクトグラム)** — Unified symbol systems that name facilities and actions without language. Tokyo 1964 systematized sport and wayfinding symbols; the AIGA/DOT transportation set became the public-domain world standard. → https://indexstyle.org/styles/pictogram-system

## Further study

- Louis Braille
- Barbier's night writing
- Japanese braille (Kuraji Ishikawa)

## Reference works

- 点字以前の浮き出し文字6方式 — https://commons.wikimedia.org/wiki/File:Six%20Principal%20Systems%20of%20Embossed%20Type.jpg

## Source of record

- Perkins School for the Blind — https://www.perkins.org/

## Machine surfaces

- JSON: https://indexstyle.org/api/styles/braille
- Image-generation prompt (legally clean): https://indexstyle.org/styles/braille/prompt.txt
- MCP: https://indexstyle.org/mcp (tools: search_styles, get_style, compose_styles; prompts: image-prompt, apply-style)

## 日本語

ルイ・ブライユが15歳で設計した、2×3の点で全文字を表す触覚の文字体系。指腹一つに収まるセルの寸法設計は、人間工学とタイポグラフィが一致した稀有な発明。

特徴: 2×3の点セル／指腹に合う寸法／触読の左→右／浮き出しの物質性
注意: 表面的な記号へ還元せず、時代・地域・技術・制作主体の文脈を確認する。