A scoping review of brain-computer interfaces (BCIs) has mapped the field's progress toward restoring sensory function in individuals with severe neurological impairment. The study identified a unified framework to classify BCIs based on invasiveness and signal direction, highlighting trade-offs between different modalities. Non-invasive AI-augmented silent-speech decoding has shown rapid maturity since 2023, while invasive interfaces have achieved near-conversational communication rates. The review emphasizes the need for standardization of metrics, longitudinal evidence, and cross-community collaboration to advance the field. --- Why it matters: This matters because it provides a clear understanding of the current state of BCIs in restoring sensory function, which can inform future research directions and development of more effective treatments for neurological disorders. Source: https://arxiv.org/abs/2606.15091