1. Executive Summary (Confidence: High)

IDUN Technologies AG, a 2017 spin-off of ETH Zurich, is fundamentally transforming the accessibility of brain data by moving neurotechnology from the clinic to the ear.^[27] The company has developed the IDUN Guardian, the world’s first consumer-grade in-ear EEG hearable that provides high-fidelity neural monitoring in a minimally obtrusive form-factor.^[27] With over EUR 1 million in investment and strategic collaborations with Qualcomm and Analog Devices, IDUN is positioning itself at the center of the "Internet of Humans".^[27] At CES 2026, the company unveiled its next-generation Guardian 4 device, which introduces a "Cognitive Readiness" score and live neurofeedback, signaling a transition from developer kits to a global consumer market for personalized neurotechnology.^[30]