Self‐Adhesive Gelatin/Slide‐Ring Double‐Network Hydrogel for Human Motion Sensing and Morse Code Communication

) and rigidity (154 kPa), along with high stretchability (3048%) and strong adhesion to various substrate materials. More importantly, this DN hydrogel is demonstrated as a human motion sensor capable of Morse code communication. This work not only advances the understanding of slidable PR cross-linker applications but also paves the way for innovative hydrogels tailored for high-performance wearable electronics, broadening their scope and functionality in real-world use.