I'm assuming you mean indirectly, in which case the answer is echolocation.
Bats use echolocation. Blind people can also use echolocation.
Some blind people are known to have learned it.
You actually truthfully cannot explain a color to a blind person because it will only confuse him than help him. There are organizations that do help the blind with their technology for blind people.
Bats find their way around via echolocation because they are blind and cannot navigate like other animals.
There was one boy who did clicking sounds, like echolocation.
With help
If totaly blind, then no. If partially or nearly blind it will probably make them totally blind.
No!!Actually some blind people do so they dont bump into things.
Help them to help themselves as much as possible. Everything in the home has to be exact at the same place always. Help them get out in society and meet people so they have a network. Get all the aids there are to help a blind person in their everyday life.
they use echolocation. they go out at night so prey wont see them
echolocation