<p>➀ Empa researchers developed biodegradable printed circuit boards (PCBs) using lignocellulose-based material derived from wood waste;</p><p>➁ The bio-based PCBs, processed through fibrillization and hornification, offer comparable durability to traditional epoxy boards while being compostable, enabling easier recycling of electronic components;</p><p>➂ Successful integration into functional devices like computer mice and RFID cards demonstrates potential; future work targets enhanced resilience without compromising biodegradability for industrial adoption.</p>