Concept of Braille recognition using a low‐crosstalk iontronic sensor array. (IMAGE)
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(a) Illustration of tactile challenges faced by Braille beginners. Overlapping receptive fields and strain diffusion produce blurred tactile information, often requiring repeated single‐point confirmation and slowing recognition. (b) The proposed iontronic array performs multi‐channel sensing during sliding input. With gradient‐modulus strain isolation to confine lateral strain transfer, the array preserves spatial fidelity and supports high‐resolution multi‐point recognition. The resulting temporal multi‐channel signals are processed through machine‐learning‐based decoding to identify Braille characters and generate auditory feedback, forming an assistive sensing workflow for Braille reading.
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