Device Lets the Blind "See" with Their Tongues (scientificamerican.com)

This has been posted before but hasn't attracted much attention (not since 4 years ago anyway).

great

Those kind of experiments are so crazy, in a good sense. I wonder how different it is to actually seeing, and isn't there technology today that can give eyesight to blinds? Unless this is meant to be used by people who have had injuries to their eyes