We have observed problem related to blind people. We have noticed that the slate(Braille Slate) used by the blind people(for writing purpose) is difficult to use. In the existed slate, blind people have to write Right to Left, i.e. they have to think in reverse, e.g. (They have to write PANKAJ then they will start from JAKNAP, every character or latter) in initial days. Thus, they have to think twice, first, what they have to write and second, what is the reverse of that.
There is also another problem which is faced by the users. If they want to read what they have written, they have to pull out the sheet and read it. Then if they want to continue it's quite difficult to adjust the paper/sheet at the right place.
Thus, there are problems which required solution.
