Figure 1
From: Audio motor training improves mobility and spatial cognition in visually impaired children

ABBI, the Audio Bracelet for Blind Interaction, is a small wearable custom-designed technology with integrated audio system, motion sensors, and a Bluetooth low energy module to communicate with a smartphone. The core idea behind ABBI is to use the auditory modality to convey spatial information about the movement of the person’s own body within the personal, peri-personal and extra-personal space.