Sensitivity was increased using a 6-layer pure aluminum wire winding voice coil, larger cone area and larger magnet.

ENGADGET: Pioneer rolls out new in-car lineup: CD players, amps, speakers, oh my!

Made out of relatively common materials like aluminum and steel wire, the Braille-It can also be constructed by the blind themselves -- a potentially groundbreaking development for a demographic that's too often ignored by the retail sector.

ENGADGET: Braille-It Labeler brings low-cost printing, 'sightless construction' to the blind