I was wondering what the build experience must be like for a blind person. They could feel the shapes, but they would not know the colors. The meaning of colors is different for the blind and I wondered what they would create if they knew what colors the bricks were. I thought that by engraving simple Braille letters on the bricks a new way of expression could open up to them.
These would have to be specially made bricks. This idea is not meant for the mass market, it's meant for those kids and adults that are blind. After all, LEGO bricks are so tactile and pleasurable to use for those of us that can see, wouldn't it be nice to improve that experience for those who cannot?
On the surface this idea is simple; engrave Braille onto the bricks. But it is not that simple. LEGO bricks are well engineered with exact tolerances, there will probably be unexpected difficulties in adding this feature.
These also must work well for the blind people they are targeted for. LEGO already does lots of product testing with children that can see, why not test these with those that cannot?