Low-Vision Tactile Textures

Some of the people with whom I work lack sensation in their fingers (peripheral neuropathy) as well as being visually impaired. They can feel big things, but small variations in texture are outside their perception.

They become isolated because they can not dial a phone accurately. There are devices that can help people with poor dexterity/memory dial a phone (such as the photo dialer here: http://www.amazon.com/Innovative-Technology-Electronics-Corp-Button/dp/B005UZMQNY ). People who are