# BCI Human Interface Device Protocol **Domain:** Brain-Computer Interfaces / Operating Systems / Accessibility **Doc Type:** Interface Protocol Node **Maturity:** Announced Platform Capability **Primary Source:** [[articles/The Art is Long|The Art is Long: Vespucci of Immortality]] **Related:** [[wiki/Brain-Computer Interfaces|Brain-Computer Interfaces]], [[wiki/Neural Interface|Neural Interface]], [[wiki/NEXTSTEP|NEXTSTEP]], [[wiki/Protocol for Interconnection|Protocol for Interconnection]] --- ## Definition The **BCI Human Interface Device protocol** is an Apple accessibility interface announced in 2025 to let supported brain-computer interfaces operate Switch Control across Apple platforms. ## Architectural Significance The protocol makes neural intention an operating-system input category rather than leaving each BCI confined to a bespoke laboratory integration. Third-party devices can target a documented interface layer while ordinary applications remain above it. ## Continuity Context Standardization of neural input is not consciousness transfer. It is a platform transition: neural control crossed from custom experiment into reusable consumer-computing abstraction. ## Sources / Provenance - [Apple unveils powerful accessibility features](https://www.apple.com/newsroom/2025/05/apple-unveils-powerful-accessibility-features-coming-later-this-year/), May 2025.