Neuralink Data Handling: Usage, Processing, Storage, and Deletion
- Neuralink's implant records from 1,024 electrodes, processes signals on its chip, and sends them over Bluetooth to the participant's paired device, where they are decoded into commands.
- Neuralink's privacy policy, updated March 12, 2025, says the company does not sell personal information.
- For trial participants, the policy says data is governed by the trial protocol, informed consent, and, where applicable, HIPAA authorization forms; those documents are not public.
What data the implant collects
Neuralink's N1 implant records electrical activity from 1,024 electrodes in the motor cortex while it is in use. Participants have streamed over 50,000 hours of neural data in total, according to Neuralink (October 2026).
The implant amplifies and processes signals on its chip before sending them over Bluetooth to a paired smartphone or computer. For people who join the patient registry, Neuralink collects contact details, medical history, and other information to check trial eligibility.
How the data is processed
On the paired device, software turns neuron spikes into commands like cursor movement or robotic arm grasps. The models adapt to each user, and participants now reach a median of about 10 bits per second. Neuralink also uses participants' data to improve its software: its 2026 decoders were pretrained on the full 50,000 hours.
Participants like Noland Arbaugh use the device for browsing, gaming, and 3D design. Clinical research on the data is overseen by each trial site's ethics board.
What the privacy policy says
Neuralink's privacy policy, last updated March 12, 2025, says the company does not sell personal information. For clinical trials, it says data is governed by the applicable trial protocol, the participant's informed consent, and, where applicable, HIPAA authorization forms.
That means the public policy does not say how long trial recordings are kept, where they are stored, or how a participant could ask for them to be deleted. Those terms are set in consent documents that Neuralink has not published.
Sharing and disclosure
The policy's no-sale statement is the clearest public commitment. Trials in Canada and the UK also follow local privacy law, and a UAE site is recruiting.
Rights and open questions
People outside trials, such as registry applicants and website visitors, can use the rights described in the privacy policy and in state laws like California's. For trial participants, rights over neural recordings depend on their consent forms. On September 24, 2025, Senators Schumer, Cantwell, and Markey introduced the MIND Act, which would direct the FTC to study how neural data is collected and used.
As Neuralink adds channels (a 3,000-channel implant was disclosed in September 2026) and new products like Blindsight, the amount of data per participant will grow, and pressure to publish clearer rules will grow with it.
This article was first published in October 2025 and corrected in October 2026; the latest patient count is on the patient table.
