Blind sensor costume

There are several ways to present to blind person the visual information: tongue applicators, sound speakers... However they have their own drawbacks - hygiene,  mixed up with the surrounding sound.

My offer is to use our skin which is idle when we move -  elastic costume with multiple contact sensor points:



Such points may create some heat and electric irritation with different voltage and frequency. Depending on the part of the body there will be more (hands, foot) or less (back) points. Having the large area the overall pixel map could be significant enough to represent the reality. Due to simple technology, I should be affordable for developing countries. It could be used by blind AND death people not only to say what they see but to communicate in "touch" mode.    
Moreover, costume may work as addition to other tongue and sound devices.