BrainLink Protocol Gets IEEE Approval — Opening the Door for Direct Brain-to-Brain Communication

No Talking, No Typing — The Protocol Layer for Brain-to-Brain Communication Is Now in Place

Language is humanity's primary communication tool, but it carries a fundamental efficiency bottleneck: thoughts must be encoded into words, transmitted through text or sound, then decoded back into thoughts by the receiver. Information is lost at every step.

On April 8, IEEE formally ratified the BrainLink brain-to-brain communication protocol (IEEE 802.11bb), laying the technical groundwork for bypassing language altogether. BrainLink defines a complete standard for capturing brain signals, encoding them, transmitting them over networks, and delivering them as stimulation to a second brain.

The protocol works in four stages. First, "capture" — brain signals are acquired from the sender via an implanted or non-invasive brain-computer interface. Second, "encoding" — an AI system converts raw neural data into a standardized "neuro-semantic code." Third, "transmission" — the encoded data travels over conventional internet infrastructure. Fourth, "stimulation" — the receiver's brain-computer interface converts the code into transcranial electrical or ultrasonic stimulation, applied directly to the cortex.

In the first published experiment, an MIT research team enabled two patients with quadriplegia to communicate bidirectionally via BrainLink. The sender encoded "yes" by imagining right-hand movement and "no" by imagining left-hand movement. The receiver perceived the corresponding motor imagery through transcranial stimulation.

"This isn't telepathy — we're still far from reading complex thoughts," said Dr. Sarah Chen, BrainLink's lead protocol author. "But it proves that two brains can communicate at the raw signal level over a network."

Data rates are currently extremely low — roughly two bits per minute, equivalent to one "yes" or "no" per minute. That's negligible compared to human speech at roughly 100 bits per minute, but for patients who are fully paralyzed and unable to use any conventional communication method, it may be the only option available.

Ethicists have raised profound concerns. If brain-to-brain technology matures to the point where complex thoughts can be transmitted, will an entirely new category of "thought privacy" emerge? "When your thoughts can be directly perceived by another person, does inner privacy still exist?" asked Dr. Emily Watson, a professor of ethics at Oxford.

The full BrainLink specification is available free of charge on the IEEE website. Both Neuralink and Synchron have announced plans to support the BrainLink protocol in their next-generation brain-computer interface products.