(CNN)Most people probably don't give a second thought to the yellow, bumpy tiles near the edge of subway platforms and urban crosswalks. But for the visually impaired, they can mean the difference between life and death.
How Seiichi Miyake's bumpy tiles impacted railway platforms and streets around the world
The person who dreamed up those tactile squares? Seiichi Miyake, whose invention is recognized today on Google's homepage.
Here's what you need to know about Miyake and how his invention ended up in public spaces around the world.