Today In History with The Retrospectors Braille For Your Feet
Mar 18, 2026
A lively look at the invention of Tenji tactile pavement and how raised blocks transformed street and station safety for visually impaired people. They trace the 1967 origins, the inventor’s backstory, and early design struggles. The conversation covers how railways and laws sped adoption, retrofit challenges, global spread, and imaginative future ideas like embedding QR-style codes into sidewalks.
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How A Casual Remark Sparked Tenji Blocks
- Seiichi Miyake was inspired when a blind friend said "I can tell by the soles of my feet," prompting Miyake to design raised paving blocks called Tenji blocks.
- Miyake first installed 230 blocks outside the Okayama School for the Blind in 1967 after testing textures with blind users Hideyuki Iwahashi and his father.
From Defrosting Plates To Braille For Feet
- Miyake initially worked on a device to prevent snow on number plates before switching to accessibility after witnessing a blind man struggle crossing a busy road.
- He collaborated with Hideyuki Iwahashi and his father to test textured surfaces underfoot, inspiring the Tenji dot pattern.
Inventor Funded Trials But Missed Global Success
- Miyake self-funded early trials and donated tiles to local governments but saw no orders until major cities adopted them around 1970.
- He became ill and died in 1982 before seeing worldwide adoption of his invention.