Tactile Graphics Helper
TGH makes tactile graphics more accessible tracking the user’s finger as they explore a tactile graphic, announcing information about the location they are pointing to.
TGH (short for “Tactile Graphics Helper”) is a free iOS app from The Smith-Kettlewell Eye Research Institute that makes tactile graphics more accessible to people with visual impairments.
The basic idea of TGH is to track the user’s pointing finger as they explore a tactile graphic, announcing text-to-speech information about the location they are pointing to.