BrailleBand: Blind Support Haptic Wearable Band for Communication using Braille Language

TL;DR

The BrailleBand is a wearable haptic device designed to assist visually impaired users in reading Braille passively and affordably, improving accessibility and integration with mobile devices.

Contribution

This study introduces the BrailleBand, a novel wearable haptic device that enables passive Braille reading and connects seamlessly with smartphones via Bluetooth.

Findings

Achieved an average character transfer rate of 0.4375 characters/sec.

Demonstrated improved usability and reading efficiency in blind users.

Validated the device's adaptability through user testing.

Abstract

Visually impaired people are neglected from many modern communication and interaction procedures. Assistive technologies such as text-to-speech and braille displays are the most commonly used means of connecting such visually impaired people with mobile phones and other smart devices. Both these solutions face usability issues, thus this study focused on developing a user friendly wearable solution called the "BrailleBand" with haptic technology while preserving affordability. The "BrailleBand" enables passive reading using the Braille language. Connectivity between the BrailleBand and the smart device (phone) is established using Bluetooth protocol. It consists of six nodes in three bands worn on the arm to map the braille alphabet, which are actuated to give the sense of touch corresponding to the characters. Three mobile applications were developed for training the visually impaired and to integrate existing smart mobile applications such as navigation and short message service (SMS) with the device BrailleBand. The adaptability, usability and efficiency of reading was tested on a sample of blind users which reflected progressive results. Even though, the reading accuracy depends on the time duration between the characters (character gap) an average Character Transfer Rate of 0.4375 characters per second can be achieved with a character gap of 1000 ms.