■紹介ムービー https://youtu.be/5rkOZDsW0qc 【ある映画との出会いから生まれた問題意識】 触覚は言語だ 佐々木誠監督の作品、「ナイトクルージング Night Cruising」を 渋谷のアップリンクで見たときの衝撃は今でも鮮明に覚えている。 ミュージションの加藤秀幸さんは生まれながら視力を持たない全盲者。 彼の映画製作を追うドキュメンタリーだ。 この作品を見て感じた違和感や問題意識はわたしのなかでまだ生きている。 常識は常識ではない。 非常識は非常識ではない。 ありとあらゆることを疑う必要はないかもしれないが、 良質な問いとの出会いは人生を豊かにしてくれる。 映画を観たあとに感じた違和感を、すぐに仲間に共有し、議論をした。 議論を盛り上げるための仕掛けのひとつとして、 サイコロを振って話す順番を決めることにした。 だが、ふつうのサイコロを使ってよいのだろうか？ そんなはずはない。 そんな問題意識から生まれたのが触覚ダイスだった。 【頼りになるのは触覚だけ】 これはダイス（サイコロ）。 八面体のダイスなので、目は１，２、３、４，５，６，７，８まで。 ３Dプリンターで出力したサイコロを薄いゴムで覆っている。 サイコロを振り、触覚だけを頼りに判読する。 視覚に頼らず使えるよう、アクセシビリティに配慮したBraille Dice（ブライユダイス） というサイコロはすでに世の中に存在しているが、点字の知識のある晴眼者は視覚で 判読することができる。 しかし、触覚ダイスを判読するのに頼りになるのは触覚だけ。 【開発者】 大谷和利（デザイナー）／杉山亮介（プロデューサー） ------------------------------------------------------------------------------------

【All you need is to touch.】 This is a dice. Since it is an octahedral dice, it has between one and six spots. The dice output by the 3D printer is covered with thin rubber. Shake the dice and read only with the sense of touch. There is already a dice called Braille Dice that can be used without relying on vision, but it is capable for sighted people to read with vision. However, the only thing that can be relied upon to read the tactile dice is a sense of touch.

First, prepare an octahedron with Tinkercad. Ribs were added on the ridgelines to soften the contact with hands. Although so-called Braille dices have already existed, new structures are required because Braille representing numbers requires upper and lower distinction for interpretation, and sighted persons need to learn Braille itself. (The main reasons for starting from the octahedron was that the number of participants in the workshop was eight, and that starting from the octahedron would make it easier to apply regular hexahedron dice and other applications.) Initially, the surface was not covered, and the fingers were inserted into the holes on each side to count the internal protrusions. However, after testing by visually impaired persons and getting some advice, we changed to a method that uses large protrusion and dent to grasp either a number group of 1-4 or 5-8, and then identifies the exact number by adding the number of linear protrusions extending radially from the center of each surface. The discovery of this simple but easy-to-understand technique has led to the final structure where the eyes of the dice can be recognized almost instantaneously, using the most delicate human tactile part, namely the belly of fingers. To achieve easy 3D printing without the need for support materials, 3D data of the dice is separated in two parts and even entry-level 3D printers can print this dice with sufficient surface quality. And rubber balloons are used to cover a dice so that both the visually impaired and sighted persons enjoy it in equal condition. These construction and material ensure this dice can be easily reproduced around the world and open up new possibilities in dice play.

8 centimeter polyhedron dice. By covering the dice output by the 3D printer with thin rubber, the body functions necessary for interpretation are limited to a sense of touch. We came up with a method that uses large protrusion and dent to grasp either a number group of 1-4 or 5-8, and then identifies the exact number by adding the number of linear protrusions extending radially from the center of each surface. The discovery of this simple but easy-to-understand technique has led to the final structure where the eyes of the dice can be recognized almost instantaneously, using the most delicate human tactile part, namely the belly of fingers.