A Compact Electro-tactile System for Braille Display

Tactile displays have gained significant attention, particularly in the medical field for their application in Braille for the visually impaired. Traditional Braille embossing systems face limitations in terms of device size and complexity due to mechanical stimulation. Therefore, electro-tactile displays have emerged as a promising solution for implementing Braille. Our study presents a compact electro-tactile device with built-in electrodes, which is used to determine optimized stimulation parameters. We conducted tests on both polarity and intensity, culminating in a Braille number examination using 0.8mA, 1ms anodal stimulation. The results showed an average accuracy of 64.3% in seven participants, and three of them achieved over 90%.