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arXiv · 2607.25968

E-MagDiP: Electro-Magnetic based Differential Privacy for EEG based Community Sensing

Ayanga Imesha Kumari Kalupahana·Vishruti Ranjan·Li-Shiuan Peh
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Abstract

EEG-based community sensing programs are emerging globally as a tool to leverage aggregated brain data to gain insights into attentiveness of students and employees. But these programs raise privacy concerns because EEG signals contain sensitive personal information. Differential Privacy (DP) can protect individuals while preserving aggregate statistics yet applying DP to EEG data is challenging as it requires user-level noise generation, which increases power and latency. Besides, most commercial EEG headsets cannot be modified to add such noise. We propose E-MagDiP, a framework that uses an external radio to transmit RF signals onto EEG headsets, perturbing signals at acquisition to induce DP noise. To the best of our knowledge, E-MagDiP is the first framework to use RF signals for privacy instead of attacks, enabling practical DP for EEG community sensing without any user-level modification.

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Ayanga Imesha Kumari Kalupahana, Vishruti Ranjan, Li-Shiuan Peh. 2026-07-28. E-MagDiP: Electro-Magnetic based Differential Privacy for EEG based Community Sensing. https://arxiv.org/abs/2607.25968

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