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Why Do Elevator Buttons Have Little Dots Under Them?

Why Do Elevator Buttons Have Little Dots Under Them?
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There are many things around us which we see and use everyday but we fail to notice anything strange about them. Let's take an example of the elevator, even though we hate it but still we use it everyday and press these button to make it work for you.

But, have you ever noticed those little dots on every elevator button under the numbers or letters? What's the hidden meaning behind them?

Let's find out.

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What's the logic behind these dots?

What's the logic behind these dots?

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Any guesses?

Any guesses?
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I hope you guessed the right answer.

I hope you guessed the right answer.
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Yeah, you were right, it's the Braille writing system.

Yeah, you were right, it's the Braille writing system.
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Braille is a writing system to help blind people read by sensing these raised dots.

Braille is a writing system to help blind people read by sensing these raised dots.
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Hodor.......

Hodor.......
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Braille was created in 1824.

Braille was created in 1824.
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The credit of creating Braille writing system goes to Frenchman Louis Braille, who lost his eyesight at the age of 15.

Does your elevator buttons have these dots?

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