Somebody invented a magic hairpin that is supposed to help the deaf. With assistance of 3D printing technology, a hairpin-looking device was built. Inside that hairpin is a vibrator that converts sound to help the deaf to hear better. We already have as many as a dozen different vibrating devices.
-see the blueish hairpin on the deaf girl’s hair. It actually is a vbrator,
that vibrates sounds to help the deaf know what they are hearing.
The 3D printing technology helped create this unique hairpin.
Read more http://deafdigest.net/hairpin-helping-the-deaf/