Serious question: How do blind people know where to find the braille?

Like, going through the airport, I noticed a sign in English, French, and braille. Awesome that it's there for blind people but how would they ever know it was there??

This has often puzzled me!

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Punches · 46-50, F

Also, does braille come in different languages or is it it's OWN language?

Entwistle · 56-60, M

@Punches It has its own lettering system.

SW-User

@Punches I think it is like an alphabet, so it could be used in different languages?

Punches · 46-50, F

@SW-User Possibly, I hope I never have to learn.